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https://github.com/RPCS3/llvm.git
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3237f88882
Convert >= 1 to > 0, etc. Using comparison with zero isn't a win on its own, but it exposes more opportunities for CC reuse (the next patch). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187571 91177308-0d34-0410-b5e6-96231b3b80d8
238 lines
6.1 KiB
LLVM
238 lines
6.1 KiB
LLVM
; Test 32-bit signed comparisons between memory and a constant.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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; Check ordered comparisons with 0.
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define double @f1(double %a, double %b, i32 *%ptr) {
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; CHECK-LABEL: f1:
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; CHECK: chsi 0(%r2), 0
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; CHECK-NEXT: jl
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%val = load i32 *%ptr
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%cond = icmp slt i32 %val, 0
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check ordered comparisons with 1.
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define double @f2(double %a, double %b, i32 *%ptr) {
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; CHECK-LABEL: f2:
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; CHECK: chsi 0(%r2), 0
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; CHECK-NEXT: jle
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%val = load i32 *%ptr
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%cond = icmp slt i32 %val, 1
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check ordered comparisons with the high end of the signed 16-bit range.
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define double @f3(double %a, double %b, i32 *%ptr) {
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; CHECK-LABEL: f3:
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; CHECK: chsi 0(%r2), 32767
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; CHECK-NEXT: jl
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%val = load i32 *%ptr
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%cond = icmp slt i32 %val, 32767
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check the next value up, which can't use CHSI.
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define double @f4(double %a, double %b, i32 *%ptr) {
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; CHECK-LABEL: f4:
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; CHECK-NOT: chsi
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; CHECK: br %r14
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%val = load i32 *%ptr
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%cond = icmp slt i32 %val, 32768
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check ordered comparisons with -1.
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define double @f5(double %a, double %b, i32 *%ptr) {
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; CHECK-LABEL: f5:
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; CHECK: chsi 0(%r2), -1
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; CHECK-NEXT: jl
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%val = load i32 *%ptr
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%cond = icmp slt i32 %val, -1
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check ordered comparisons with the low end of the 16-bit signed range.
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define double @f6(double %a, double %b, i32 *%ptr) {
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; CHECK-LABEL: f6:
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; CHECK: chsi 0(%r2), -32768
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; CHECK-NEXT: jl
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%val = load i32 *%ptr
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%cond = icmp slt i32 %val, -32768
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check the next value down, which can't use CHSI.
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define double @f7(double %a, double %b, i32 *%ptr) {
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; CHECK-LABEL: f7:
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; CHECK-NOT: chsi
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; CHECK: br %r14
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%val = load i32 *%ptr
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%cond = icmp slt i32 %val, -32769
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check equality comparisons with 0.
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define double @f8(double %a, double %b, i32 *%ptr) {
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; CHECK-LABEL: f8:
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; CHECK: chsi 0(%r2), 0
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; CHECK-NEXT: je
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%val = load i32 *%ptr
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%cond = icmp eq i32 %val, 0
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check equality comparisons with 1.
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define double @f9(double %a, double %b, i32 *%ptr) {
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; CHECK-LABEL: f9:
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; CHECK: chsi 0(%r2), 1
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; CHECK-NEXT: je
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%val = load i32 *%ptr
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%cond = icmp eq i32 %val, 1
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check equality comparisons with the high end of the signed 16-bit range.
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define double @f10(double %a, double %b, i32 *%ptr) {
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; CHECK-LABEL: f10:
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; CHECK: chsi 0(%r2), 32767
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; CHECK-NEXT: je
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%val = load i32 *%ptr
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%cond = icmp eq i32 %val, 32767
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check the next value up, which can't use CHSI.
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define double @f11(double %a, double %b, i32 *%ptr) {
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; CHECK-LABEL: f11:
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; CHECK-NOT: chsi
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; CHECK: br %r14
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%val = load i32 *%ptr
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%cond = icmp eq i32 %val, 32768
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check equality comparisons with -1.
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define double @f12(double %a, double %b, i32 *%ptr) {
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; CHECK-LABEL: f12:
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; CHECK: chsi 0(%r2), -1
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; CHECK-NEXT: je
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%val = load i32 *%ptr
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%cond = icmp eq i32 %val, -1
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check equality comparisons with the low end of the 16-bit signed range.
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define double @f13(double %a, double %b, i32 *%ptr) {
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; CHECK-LABEL: f13:
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; CHECK: chsi 0(%r2), -32768
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; CHECK-NEXT: je
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%val = load i32 *%ptr
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%cond = icmp eq i32 %val, -32768
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check the next value down, which should be treated as a positive value.
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define double @f14(double %a, double %b, i32 *%ptr) {
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; CHECK-LABEL: f14:
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; CHECK-NOT: chsi
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; CHECK: br %r14
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%val = load i32 *%ptr
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%cond = icmp eq i32 %val, -32769
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check the high end of the CHSI range.
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define double @f15(double %a, double %b, i32 %i1, i32 *%base) {
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; CHECK-LABEL: f15:
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; CHECK: chsi 4092(%r3), 0
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; CHECK-NEXT: jl
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%ptr = getelementptr i32 *%base, i64 1023
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%val = load i32 *%ptr
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%cond = icmp slt i32 %val, 0
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check the next word up, which needs separate address logic,
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define double @f16(double %a, double %b, i32 *%base) {
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; CHECK-LABEL: f16:
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; CHECK: aghi %r2, 4096
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; CHECK: chsi 0(%r2), 0
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; CHECK-NEXT: jl
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%ptr = getelementptr i32 *%base, i64 1024
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%val = load i32 *%ptr
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%cond = icmp slt i32 %val, 0
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check negative offsets, which also need separate address logic.
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define double @f17(double %a, double %b, i32 *%base) {
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; CHECK-LABEL: f17:
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; CHECK: aghi %r2, -4
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; CHECK: chsi 0(%r2), 0
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; CHECK-NEXT: jl
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%ptr = getelementptr i32 *%base, i64 -1
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%val = load i32 *%ptr
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%cond = icmp slt i32 %val, 0
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check that CHSI does not allow indices.
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define double @f18(double %a, double %b, i64 %base, i64 %index) {
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; CHECK-LABEL: f18:
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; CHECK: agr {{%r2, %r3|%r3, %r2}}
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; CHECK: chsi 0({{%r[23]}}), 0
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; CHECK-NEXT: jl
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%add = add i64 %base, %index
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%ptr = inttoptr i64 %add to i32 *
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%val = load i32 *%ptr
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%cond = icmp slt i32 %val, 0
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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