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Diffstat (limited to 'test/CodeGen/SystemZ/fp-cmp-05.ll')
| -rw-r--r-- | test/CodeGen/SystemZ/fp-cmp-05.ll | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/test/CodeGen/SystemZ/fp-cmp-05.ll b/test/CodeGen/SystemZ/fp-cmp-05.ll new file mode 100644 index 000000000000..c8eb18c6e6ba --- /dev/null +++ b/test/CodeGen/SystemZ/fp-cmp-05.ll @@ -0,0 +1,80 @@ +; Test that floating-point instructions that set cc are used to +; eliminate compares for load complement, load negative and load +; positive. +; +; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s +; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s + +; Load complement (sign-bit flipped). +; Test f32 +define float @f1(float %a, float %b, float %f) { +; CHECK-LABEL: f1: +; CHECK: lcebr +; CHECK-NEXT: je + %neg = fsub float -0.0, %f + %cond = fcmp oeq float %neg, 0.0 + %res = select i1 %cond, float %a, float %b + ret float %res +} + +; Test f64 +define double @f2(double %a, double %b, double %f) { +; CHECK-LABEL: f2: +; CHECK: lcdbr +; CHECK-NEXT: je + %neg = fsub double -0.0, %f + %cond = fcmp oeq double %neg, 0.0 + %res = select i1 %cond, double %a, double %b + ret double %res +} + +; Negation of floating-point absolute. +; Test f32 +declare float @llvm.fabs.f32(float %f) +define float @f3(float %a, float %b, float %f) { +; CHECK-LABEL: f3: +; CHECK: lnebr +; CHECK-NEXT: je + %abs = call float @llvm.fabs.f32(float %f) + %neg = fsub float -0.0, %abs + %cond = fcmp oeq float %neg, 0.0 + %res = select i1 %cond, float %a, float %b + ret float %res +} + +; Test f64 +declare double @llvm.fabs.f64(double %f) +define double @f4(double %a, double %b, double %f) { +; CHECK-LABEL: f4: +; CHECK: lndbr +; CHECK-NEXT: je + %abs = call double @llvm.fabs.f64(double %f) + %neg = fsub double -0.0, %abs + %cond = fcmp oeq double %neg, 0.0 + %res = select i1 %cond, double %a, double %b + ret double %res +} + +; Absolute floating-point value. +; Test f32 +define float @f5(float %a, float %b, float %f) { +; CHECK-LABEL: f5: +; CHECK: lpebr +; CHECK-NEXT: je + %abs = call float @llvm.fabs.f32(float %f) + %cond = fcmp oeq float %abs, 0.0 + %res = select i1 %cond, float %a, float %b + ret float %res +} + +; Test f64 +define double @f6(double %a, double %b, double %f) { +; CHECK-LABEL: f6: +; CHECK: lpdbr +; CHECK-NEXT: je + %abs = call double @llvm.fabs.f64(double %f) + %cond = fcmp oeq double %abs, 0.0 + %res = select i1 %cond, double %a, double %b + ret double %res +} + |
