diff options
Diffstat (limited to 'test/CodeGen/X86/fast-isel-select-cmp.ll')
-rw-r--r-- | test/CodeGen/X86/fast-isel-select-cmp.ll | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/test/CodeGen/X86/fast-isel-select-cmp.ll b/test/CodeGen/X86/fast-isel-select-cmp.ll new file mode 100644 index 0000000..1af30e9 --- /dev/null +++ b/test/CodeGen/X86/fast-isel-select-cmp.ll @@ -0,0 +1,50 @@ +; RUN: llc < %s -O0 -mtriple=x86_64-apple-darwin10 | FileCheck %s + +; Test if we do not fold the cmp into select if the instructions are in +; different basic blocks. + +define i32 @select_cmp_cmov_i32(i32 %a, i32 %b) { +; CHECK-LABEL: select_cmp_cmov_i32 +; CHECK-LABEL: continue +; CHECK-NOT: cmp + %1 = icmp ult i32 %a, %b + br i1 %1, label %continue, label %exit + +continue: + %2 = select i1 %1, i32 %a, i32 %b + ret i32 %2 + +exit: + ret i32 -1 +} + +define float @select_fcmp_oeq_f32(float %a, float %b, float %c, float %d) { +; CHECK-LABEL: select_fcmp_oeq_f32 +; CHECK-LABEL: continue +; CHECK-NOT: cmp + %1 = fcmp oeq float %a, %b + br i1 %1, label %continue, label %exit + +continue: + %2 = select i1 %1, float %c, float %d + ret float %2 + +exit: + ret float -1.0 +} + +define float @select_fcmp_one_f32(float %a, float %b, float %c, float %d) { +; CHECK-LABEL: select_fcmp_one_f32 +; CHECK-LABEL: continue +; CHECK-NOT: ucomi + %1 = fcmp one float %a, %b + br i1 %1, label %continue, label %exit + +continue: + %2 = select i1 %1, float %c, float %d + ret float %2 + +exit: + ret float -1.0 +} + |