diff options
Diffstat (limited to 'llvm/test/CodeGen/X86/mxcsr-reg-usage.ll')
| -rw-r--r-- | llvm/test/CodeGen/X86/mxcsr-reg-usage.ll | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/mxcsr-reg-usage.ll b/llvm/test/CodeGen/X86/mxcsr-reg-usage.ll new file mode 100644 index 00000000000..da7653255a8 --- /dev/null +++ b/llvm/test/CodeGen/X86/mxcsr-reg-usage.ll @@ -0,0 +1,22 @@ +; RUN: llc -march=x86-64 -mattr=+mmx -stop-after finalize-isel -o - %s | FileCheck %s +; This test ensures that the MXCSR is implicitly used by MMX FP instructions. + +define x86_mmx @mxcsr_mmx(<4 x float> %a0) { +; CHECK: MMX_CVTPS2PIirr %{{[0-9]}}, implicit $mxcsr +; CHECK: MMX_CVTPI2PSirr %{{[0-9]}}, killed %{{[0-9]}}, implicit $mxcsr +; CHECK: MMX_CVTTPS2PIirr killed %{{[0-9]}}, implicit $mxcsr +; CHECK: MMX_CVTPI2PDirr killed %{{[0-9]$}} +; CHECK: MMX_CVTPD2PIirr killed %{{[0-9]}}, implicit $mxcsr + %1 = call x86_mmx @llvm.x86.sse.cvtps2pi(<4 x float> %a0) + %2 = call <4 x float> @llvm.x86.sse.cvtpi2ps(<4 x float> %a0, x86_mmx %1) + %3 = call x86_mmx @llvm.x86.sse.cvttps2pi(<4 x float> %2) + %4 = call <2 x double> @llvm.x86.sse.cvtpi2pd(x86_mmx %3) + %5 = call x86_mmx @llvm.x86.sse.cvtpd2pi(<2 x double> %4) + ret x86_mmx %5 +} + +declare x86_mmx @llvm.x86.sse.cvtps2pi(<4 x float>) +declare<4 x float> @llvm.x86.sse.cvtpi2ps(<4 x float>, x86_mmx) +declare x86_mmx @llvm.x86.sse.cvttps2pi(<4 x float>) +declare <2 x double> @llvm.x86.sse.cvtpi2pd(x86_mmx) +declare x86_mmx @llvm.x86.sse.cvtpd2pi(<2 x double>) |
