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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275686 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Sanjay Patel 2016-07-16 16:27:58 +00:00
parent 2913e8c9be
commit dbf9b41991
1 changed files with 54 additions and 47 deletions
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101
test/Transforms/InstCombine/signext.ll
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@ -1,78 +1,85 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instcombine -S | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128:n8:16:32:64"
define i32 @test1(i32 %x) {
%tmp.1 = and i32 %x, 65535 ; <i32> [#uses=1]
%tmp.2 = xor i32 %tmp.1, -32768 ; <i32> [#uses=1]
%tmp.3 = add i32 %tmp.2, 32768 ; <i32> [#uses=1]
ret i32 %tmp.3
; CHECK-LABEL: @test1(
; CHECK: %sext = shl i32 %x, 16
; CHECK: %tmp.3 = ashr exact i32 %sext, 16
; CHECK: ret i32 %tmp.3
; CHECK-NEXT: [[SEXT:%.*]] = shl i32 %x, 16
; CHECK-NEXT: [[TMP_3:%.*]] = ashr exact i32 [[SEXT]], 16
; CHECK-NEXT: ret i32 [[TMP_3]]
;
%tmp.1 = and i32 %x, 65535
%tmp.2 = xor i32 %tmp.1, -32768
%tmp.3 = add i32 %tmp.2, 32768
ret i32 %tmp.3
}
define i32 @test2(i32 %x) {
%tmp.1 = and i32 %x, 65535 ; <i32> [#uses=1]
%tmp.2 = xor i32 %tmp.1, 32768 ; <i32> [#uses=1]
%tmp.3 = add i32 %tmp.2, -32768 ; <i32> [#uses=1]
ret i32 %tmp.3
; CHECK-LABEL: @test2(
; CHECK: %sext = shl i32 %x, 16
; CHECK: %tmp.3 = ashr exact i32 %sext, 16
; CHECK: ret i32 %tmp.3
; CHECK-NEXT: [[SEXT:%.*]] = shl i32 %x, 16
; CHECK-NEXT: [[TMP_3:%.*]] = ashr exact i32 [[SEXT]], 16
; CHECK-NEXT: ret i32 [[TMP_3]]
;
%tmp.1 = and i32 %x, 65535
%tmp.2 = xor i32 %tmp.1, 32768
%tmp.3 = add i32 %tmp.2, -32768
ret i32 %tmp.3
}
define i32 @test3(i16 %P) {
%tmp.1 = zext i16 %P to i32 ; <i32> [#uses=1]
%tmp.4 = xor i32 %tmp.1, 32768 ; <i32> [#uses=1]
%tmp.5 = add i32 %tmp.4, -32768 ; <i32> [#uses=1]
ret i32 %tmp.5
; CHECK-LABEL: @test3(
; CHECK: %tmp.5 = sext i16 %P to i32
; CHECK: ret i32 %tmp.5
; CHECK-NEXT: [[TMP_5:%.*]] = sext i16 %P to i32
; CHECK-NEXT: ret i32 [[TMP_5]]
;
%tmp.1 = zext i16 %P to i32
%tmp.4 = xor i32 %tmp.1, 32768
%tmp.5 = add i32 %tmp.4, -32768
ret i32 %tmp.5
}
define i32 @test4(i32 %x) {
%tmp.1 = and i32 %x, 255 ; <i32> [#uses=1]
%tmp.2 = xor i32 %tmp.1, 128 ; <i32> [#uses=1]
%tmp.3 = add i32 %tmp.2, -128 ; <i32> [#uses=1]
ret i32 %tmp.3
; CHECK-LABEL: @test4(
; CHECK: %sext = shl i32 %x, 24
; CHECK: %tmp.3 = ashr exact i32 %sext, 24
; CHECK: ret i32 %tmp.3
; CHECK-NEXT: [[SEXT:%.*]] = shl i32 %x, 24
; CHECK-NEXT: [[TMP_3:%.*]] = ashr exact i32 [[SEXT]], 24
; CHECK-NEXT: ret i32 [[TMP_3]]
;
%tmp.1 = and i32 %x, 255
%tmp.2 = xor i32 %tmp.1, 128
%tmp.3 = add i32 %tmp.2, -128
ret i32 %tmp.3
}
define i32 @test5(i32 %x) {
%tmp.2 = shl i32 %x, 16 ; <i32> [#uses=1]
%tmp.4 = ashr i32 %tmp.2, 16 ; <i32> [#uses=1]
ret i32 %tmp.4
; CHECK-LABEL: @test5(
; CHECK: %tmp.2 = shl i32 %x, 16
; CHECK: %tmp.4 = ashr exact i32 %tmp.2, 16
; CHECK: ret i32 %tmp.4
; CHECK-NEXT: [[TMP_2:%.*]] = shl i32 %x, 16
; CHECK-NEXT: [[TMP_4:%.*]] = ashr exact i32 [[TMP_2]], 16
; CHECK-NEXT: ret i32 [[TMP_4]]
;
%tmp.2 = shl i32 %x, 16
%tmp.4 = ashr i32 %tmp.2, 16
ret i32 %tmp.4
}
define i32 @test6(i16 %P) {
%tmp.1 = zext i16 %P to i32 ; <i32> [#uses=1]
%sext1 = shl i32 %tmp.1, 16 ; <i32> [#uses=1]
%tmp.5 = ashr i32 %sext1, 16 ; <i32> [#uses=1]
ret i32 %tmp.5
; CHECK-LABEL: @test6(
; CHECK: %tmp.5 = sext i16 %P to i32
; CHECK: ret i32 %tmp.5
; CHECK-NEXT: [[TMP_5:%.*]] = sext i16 %P to i32
; CHECK-NEXT: ret i32 [[TMP_5]]
;
%tmp.1 = zext i16 %P to i32
%sext1 = shl i32 %tmp.1, 16
%tmp.5 = ashr i32 %sext1, 16
ret i32 %tmp.5
}
define i32 @test7(i32 %x) nounwind readnone {
entry:
%shr = lshr i32 %x, 5 ; <i32> [#uses=1]
%xor = xor i32 %shr, 67108864 ; <i32> [#uses=1]
%sub = add i32 %xor, -67108864 ; <i32> [#uses=1]
ret i32 %sub
define i32 @test7(i32 %x) {
; CHECK-LABEL: @test7(
; CHECK: %sub = ashr i32 %x, 5
; CHECK: ret i32 %sub
; CHECK-NEXT: [[SUB:%.*]] = ashr i32 %x, 5
; CHECK-NEXT: ret i32 [[SUB]]
;
%shr = lshr i32 %x, 5
%xor = xor i32 %shr, 67108864
%sub = add i32 %xor, -67108864
ret i32 %sub
}