mirror of
https://github.com/RPCSX/llvm.git
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52894d83e1
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@287982 91177308-0d34-0410-b5e6-96231b3b80d8
337 lines
8.5 KiB
LLVM
337 lines
8.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -instcombine -S | FileCheck %s
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define i32 @sdiv1(i32 %x) {
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; CHECK-LABEL: @sdiv1(
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; CHECK-NEXT: [[Y:%.*]] = sdiv i32 %x, 8
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; CHECK-NEXT: ret i32 [[Y]]
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;
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%y = sdiv i32 %x, 8
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ret i32 %y
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}
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define i32 @sdiv2(i32 %x) {
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; CHECK-LABEL: @sdiv2(
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; CHECK-NEXT: [[Y:%.*]] = ashr exact i32 %x, 3
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; CHECK-NEXT: ret i32 [[Y]]
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;
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%y = sdiv exact i32 %x, 8
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ret i32 %y
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}
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define <2 x i32> @sdiv2_vec(<2 x i32> %x) {
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; CHECK-LABEL: @sdiv2_vec(
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; CHECK-NEXT: [[Y:%.*]] = ashr exact <2 x i32> %x, <i32 7, i32 7>
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; CHECK-NEXT: ret <2 x i32> [[Y]]
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;
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%y = sdiv exact <2 x i32> %x, <i32 128, i32 128>
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ret <2 x i32> %y
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}
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define i32 @sdiv3(i32 %x) {
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; CHECK-LABEL: @sdiv3(
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; CHECK-NEXT: [[Y:%.*]] = srem i32 %x, 3
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; CHECK-NEXT: [[Z:%.*]] = sub i32 %x, [[Y]]
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; CHECK-NEXT: ret i32 [[Z]]
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;
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%y = sdiv i32 %x, 3
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%z = mul i32 %y, 3
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ret i32 %z
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}
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define i32 @sdiv4(i32 %x) {
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; CHECK-LABEL: @sdiv4(
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; CHECK-NEXT: ret i32 %x
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;
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%y = sdiv exact i32 %x, 3
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%z = mul i32 %y, 3
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ret i32 %z
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}
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define i32 @sdiv5(i32 %x) {
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; CHECK-LABEL: @sdiv5(
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; CHECK-NEXT: [[Y:%.*]] = srem i32 %x, 3
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; CHECK-NEXT: [[Z:%.*]] = sub i32 [[Y]], %x
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; CHECK-NEXT: ret i32 [[Z]]
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;
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%y = sdiv i32 %x, 3
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%z = mul i32 %y, -3
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ret i32 %z
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}
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define i32 @sdiv6(i32 %x) {
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; CHECK-LABEL: @sdiv6(
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; CHECK-NEXT: [[Z:%.*]] = sub i32 0, %x
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; CHECK-NEXT: ret i32 [[Z]]
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;
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%y = sdiv exact i32 %x, 3
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%z = mul i32 %y, -3
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ret i32 %z
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}
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define i32 @udiv1(i32 %x, i32 %w) {
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; CHECK-LABEL: @udiv1(
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; CHECK-NEXT: ret i32 %x
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;
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%y = udiv exact i32 %x, %w
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%z = mul i32 %y, %w
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ret i32 %z
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}
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define i32 @udiv2(i32 %x, i32 %w) {
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; CHECK-LABEL: @udiv2(
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; CHECK-NEXT: [[Z:%.*]] = lshr exact i32 %x, %w
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; CHECK-NEXT: ret i32 [[Z]]
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;
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%y = shl i32 1, %w
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%z = udiv exact i32 %x, %y
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ret i32 %z
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}
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define i64 @ashr1(i64 %X) {
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; CHECK-LABEL: @ashr1(
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; CHECK-NEXT: [[A:%.*]] = shl i64 %X, 8
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; CHECK-NEXT: [[B:%.*]] = ashr exact i64 [[A]], 2
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; CHECK-NEXT: ret i64 [[B]]
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;
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%A = shl i64 %X, 8
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%B = ashr i64 %A, 2
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ret i64 %B
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}
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; FIXME: The ashr should be exact (like it is in the preceding test).
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define <2 x i64> @ashr1_vec(<2 x i64> %X) {
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; CHECK-LABEL: @ashr1_vec(
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; CHECK-NEXT: [[A:%.*]] = shl <2 x i64> %X, <i64 8, i64 8>
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; CHECK-NEXT: [[B:%.*]] = ashr <2 x i64> [[A]], <i64 2, i64 2>
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; CHECK-NEXT: ret <2 x i64> [[B]]
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;
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%A = shl <2 x i64> %X, <i64 8, i64 8>
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%B = ashr <2 x i64> %A, <i64 2, i64 2>
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ret <2 x i64> %B
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}
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; PR9120
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define i1 @ashr_icmp1(i64 %X) {
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; CHECK-LABEL: @ashr_icmp1(
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; CHECK-NEXT: [[B:%.*]] = icmp eq i64 %X, 0
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; CHECK-NEXT: ret i1 [[B]]
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;
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%A = ashr exact i64 %X, 2 ; X/4
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%B = icmp eq i64 %A, 0
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ret i1 %B
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}
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define i1 @ashr_icmp2(i64 %X) {
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; CHECK-LABEL: @ashr_icmp2(
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; CHECK-NEXT: [[Z:%.*]] = icmp slt i64 %X, 16
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; CHECK-NEXT: ret i1 [[Z]]
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;
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%Y = ashr exact i64 %X, 2 ; x / 4
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%Z = icmp slt i64 %Y, 4 ; x < 16
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ret i1 %Z
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}
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define <2 x i1> @ashr_icmp2_vec(<2 x i64> %X) {
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; CHECK-LABEL: @ashr_icmp2_vec(
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; CHECK-NEXT: [[Z:%.*]] = icmp slt <2 x i64> %X, <i64 16, i64 16>
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; CHECK-NEXT: ret <2 x i1> [[Z]]
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;
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%Y = ashr exact <2 x i64> %X, <i64 2, i64 2>
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%Z = icmp slt <2 x i64> %Y, <i64 4, i64 4>
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ret <2 x i1> %Z
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}
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; PR9998
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; Make sure we don't transform the ashr here into an sdiv
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define i1 @pr9998(i32 %V) {
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; CHECK-LABEL: @pr9998(
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; CHECK-NEXT: [[W_MASK:%.*]] = and i32 %V, 1
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; CHECK-NEXT: [[Z:%.*]] = icmp ne i32 [[W_MASK]], 0
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; CHECK-NEXT: ret i1 [[Z]]
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;
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%W = shl i32 %V, 31
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%X = ashr exact i32 %W, 31
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%Y = sext i32 %X to i64
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%Z = icmp ugt i64 %Y, 7297771788697658747
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ret i1 %Z
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}
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; FIXME: Vectors should fold the same way.
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define <2 x i1> @pr9998vec(<2 x i32> %V) {
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; CHECK-LABEL: @pr9998vec(
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; CHECK-NEXT: [[W:%.*]] = shl <2 x i32> %V, <i32 31, i32 31>
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; CHECK-NEXT: [[X:%.*]] = ashr exact <2 x i32> [[W]], <i32 31, i32 31>
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; CHECK-NEXT: [[Y:%.*]] = sext <2 x i32> [[X]] to <2 x i64>
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; CHECK-NEXT: [[Z:%.*]] = icmp ugt <2 x i64> [[Y]], <i64 7297771788697658747, i64 7297771788697658747>
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; CHECK-NEXT: ret <2 x i1> [[Z]]
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;
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%W = shl <2 x i32> %V, <i32 31, i32 31>
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%X = ashr exact <2 x i32> %W, <i32 31, i32 31>
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%Y = sext <2 x i32> %X to <2 x i64>
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%Z = icmp ugt <2 x i64> %Y, <i64 7297771788697658747, i64 7297771788697658747>
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ret <2 x i1> %Z
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}
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define i1 @udiv_icmp1(i64 %X) {
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; CHECK-LABEL: @udiv_icmp1(
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; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i64 %X, 0
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; CHECK-NEXT: ret i1 [[TMP1]]
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;
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%A = udiv exact i64 %X, 5 ; X/5
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%B = icmp ne i64 %A, 0
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ret i1 %B
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}
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define <2 x i1> @udiv_icmp1_vec(<2 x i64> %X) {
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; CHECK-LABEL: @udiv_icmp1_vec(
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; CHECK-NEXT: [[TMP1:%.*]] = icmp ne <2 x i64> %X, zeroinitializer
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; CHECK-NEXT: ret <2 x i1> [[TMP1]]
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;
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%A = udiv exact <2 x i64> %X, <i64 5, i64 5>
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%B = icmp ne <2 x i64> %A, zeroinitializer
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ret <2 x i1> %B
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}
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define i1 @udiv_icmp2(i64 %X) {
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; CHECK-LABEL: @udiv_icmp2(
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; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i64 %X, 0
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; CHECK-NEXT: ret i1 [[TMP1]]
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;
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%A = udiv exact i64 %X, 5 ; X/5 == 0 --> x == 0
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%B = icmp eq i64 %A, 0
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ret i1 %B
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}
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define <2 x i1> @udiv_icmp2_vec(<2 x i64> %X) {
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; CHECK-LABEL: @udiv_icmp2_vec(
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; CHECK-NEXT: [[TMP1:%.*]] = icmp eq <2 x i64> %X, zeroinitializer
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; CHECK-NEXT: ret <2 x i1> [[TMP1]]
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;
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%A = udiv exact <2 x i64> %X, <i64 5, i64 5>
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%B = icmp eq <2 x i64> %A, zeroinitializer
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ret <2 x i1> %B
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}
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define i1 @sdiv_icmp1(i64 %X) {
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; CHECK-LABEL: @sdiv_icmp1(
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; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i64 %X, 0
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; CHECK-NEXT: ret i1 [[TMP1]]
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;
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%A = sdiv exact i64 %X, 5 ; X/5 == 0 --> x == 0
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%B = icmp eq i64 %A, 0
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ret i1 %B
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}
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define <2 x i1> @sdiv_icmp1_vec(<2 x i64> %X) {
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; CHECK-LABEL: @sdiv_icmp1_vec(
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; CHECK-NEXT: [[TMP1:%.*]] = icmp eq <2 x i64> %X, zeroinitializer
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; CHECK-NEXT: ret <2 x i1> [[TMP1]]
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;
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%A = sdiv exact <2 x i64> %X, <i64 5, i64 5>
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%B = icmp eq <2 x i64> %A, zeroinitializer
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ret <2 x i1> %B
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}
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define i1 @sdiv_icmp2(i64 %X) {
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; CHECK-LABEL: @sdiv_icmp2(
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; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i64 %X, 5
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; CHECK-NEXT: ret i1 [[TMP1]]
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;
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%A = sdiv exact i64 %X, 5 ; X/5 == 1 --> x == 5
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%B = icmp eq i64 %A, 1
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ret i1 %B
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}
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define <2 x i1> @sdiv_icmp2_vec(<2 x i64> %X) {
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; CHECK-LABEL: @sdiv_icmp2_vec(
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; CHECK-NEXT: [[TMP1:%.*]] = icmp eq <2 x i64> %X, <i64 5, i64 5>
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; CHECK-NEXT: ret <2 x i1> [[TMP1]]
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;
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%A = sdiv exact <2 x i64> %X, <i64 5, i64 5>
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%B = icmp eq <2 x i64> %A, <i64 1, i64 1>
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ret <2 x i1> %B
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}
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define i1 @sdiv_icmp3(i64 %X) {
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; CHECK-LABEL: @sdiv_icmp3(
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; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i64 %X, -5
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; CHECK-NEXT: ret i1 [[TMP1]]
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;
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%A = sdiv exact i64 %X, 5 ; X/5 == -1 --> x == -5
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%B = icmp eq i64 %A, -1
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ret i1 %B
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}
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define <2 x i1> @sdiv_icmp3_vec(<2 x i64> %X) {
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; CHECK-LABEL: @sdiv_icmp3_vec(
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; CHECK-NEXT: [[TMP1:%.*]] = icmp eq <2 x i64> %X, <i64 -5, i64 -5>
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; CHECK-NEXT: ret <2 x i1> [[TMP1]]
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;
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%A = sdiv exact <2 x i64> %X, <i64 5, i64 5>
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%B = icmp eq <2 x i64> %A, <i64 -1, i64 -1>
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ret <2 x i1> %B
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}
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define i1 @sdiv_icmp4(i64 %X) {
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; CHECK-LABEL: @sdiv_icmp4(
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; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i64 %X, 0
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; CHECK-NEXT: ret i1 [[TMP1]]
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;
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%A = sdiv exact i64 %X, -5 ; X/-5 == 0 --> x == 0
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%B = icmp eq i64 %A, 0
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ret i1 %B
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}
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define <2 x i1> @sdiv_icmp4_vec(<2 x i64> %X) {
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; CHECK-LABEL: @sdiv_icmp4_vec(
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; CHECK-NEXT: [[TMP1:%.*]] = icmp eq <2 x i64> %X, zeroinitializer
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; CHECK-NEXT: ret <2 x i1> [[TMP1]]
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;
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%A = sdiv exact <2 x i64> %X, <i64 -5, i64 -5>
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%B = icmp eq <2 x i64> %A, zeroinitializer
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ret <2 x i1> %B
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}
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define i1 @sdiv_icmp5(i64 %X) {
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; CHECK-LABEL: @sdiv_icmp5(
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; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i64 %X, -5
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; CHECK-NEXT: ret i1 [[TMP1]]
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;
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%A = sdiv exact i64 %X, -5 ; X/-5 == 1 --> x == -5
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%B = icmp eq i64 %A, 1
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ret i1 %B
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}
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define <2 x i1> @sdiv_icmp5_vec(<2 x i64> %X) {
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; CHECK-LABEL: @sdiv_icmp5_vec(
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; CHECK-NEXT: [[TMP1:%.*]] = icmp eq <2 x i64> %X, <i64 -5, i64 -5>
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; CHECK-NEXT: ret <2 x i1> [[TMP1]]
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;
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%A = sdiv exact <2 x i64> %X, <i64 -5, i64 -5>
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%B = icmp eq <2 x i64> %A, <i64 1, i64 1>
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ret <2 x i1> %B
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}
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define i1 @sdiv_icmp6(i64 %X) {
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; CHECK-LABEL: @sdiv_icmp6(
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; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i64 %X, 5
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; CHECK-NEXT: ret i1 [[TMP1]]
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;
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%A = sdiv exact i64 %X, -5 ; X/-5 == -1 --> x == 5
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%B = icmp eq i64 %A, -1
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ret i1 %B
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}
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define <2 x i1> @sdiv_icmp6_vec(<2 x i64> %X) {
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; CHECK-LABEL: @sdiv_icmp6_vec(
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; CHECK-NEXT: [[TMP1:%.*]] = icmp eq <2 x i64> %X, <i64 5, i64 5>
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; CHECK-NEXT: ret <2 x i1> [[TMP1]]
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;
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%A = sdiv exact <2 x i64> %X, <i64 -5, i64 -5>
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%B = icmp eq <2 x i64> %A, <i64 -1, i64 -1>
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ret <2 x i1> %B
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}
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