diff options
| -rw-r--r-- | llvm/test/CodeGen/X86/fabs.ll | 126 |
1 files changed, 85 insertions, 41 deletions
diff --git a/llvm/test/CodeGen/X86/fabs.ll b/llvm/test/CodeGen/X86/fabs.ll index e330ee79430..a9a7c46a361 100644 --- a/llvm/test/CodeGen/X86/fabs.ll +++ b/llvm/test/CodeGen/X86/fabs.ll @@ -1,54 +1,98 @@ -; Make sure this testcase codegens to the fabs instruction, not a call to fabsf -; RUN: llc < %s -mtriple=i686-apple-macosx -mattr=-sse2,-sse3,-sse | FileCheck %s -; RUN: llc < %s -mtriple=i686-apple-macosx -mattr=-sse,-sse2,-sse3 -enable-unsafe-fp-math -enable-no-nans-fp-math | FileCheck %s --check-prefix=UNSAFE -; RUN: llc < %s -mtriple=x86_64-apple-macosx -O0 | FileCheck %s --check-prefix=NOOPT +; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py +; RUN: llc < %s -mtriple=i686-unknown-unknown -mattr=-sse,-sse2,-sse3 | FileCheck %s --check-prefix=X87 +; RUN: llc < %s -mtriple=i686-unknown-unknown -mattr=-sse,-sse2,-sse3 -enable-unsafe-fp-math -enable-no-nans-fp-math | FileCheck %s --check-prefix=X87UNSAFE +; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s --check-prefix=X64 declare float @fabsf(float) - declare x86_fp80 @fabsl(x86_fp80) -; CHECK-LABEL: test1: -; UNSAFE-LABEL: test1: -; NOOPT-LABEL: test1: define float @test1(float %X) { - %Y = call float @fabsf(float %X) readnone - ret float %Y +; X87-LABEL: test1: +; X87: # %bb.0: +; X87-NEXT: flds {{[0-9]+}}(%esp) +; X87-NEXT: fabs +; X87-NEXT: retl +; +; X87UNSAFE-LABEL: test1: +; X87UNSAFE: # %bb.0: +; X87UNSAFE-NEXT: flds {{[0-9]+}}(%esp) +; X87UNSAFE-NEXT: fabs +; X87UNSAFE-NEXT: retl +; +; X64-LABEL: test1: +; X64: # %bb.0: +; X64-NEXT: andps {{.*}}(%rip), %xmm0 +; X64-NEXT: retq + %Y = call float @fabsf(float %X) readnone + ret float %Y } -; CHECK: {{^[ \t]+fabs$}} -; UNSAFE: {{^[ \t]+fabs$}} - -; CHECK-NOT: fabs -; UNSAFE-NOT: fabs -; NOOPT-NOT: fabsf -; CHECK-LABEL: test2: -; UNSAFE-LABEL: test2: -; NOOPT-LABEL: test2: define double @test2(double %X) { - %Y = fcmp oge double %X, -0.0 - %Z = fsub double -0.0, %X - %Q = select i1 %Y, double %X, double %Z - ret double %Q +; X87-LABEL: test2: +; X87: # %bb.0: +; X87-NEXT: fldl {{[0-9]+}}(%esp) +; X87-NEXT: fldz +; X87-NEXT: fchs +; X87-NEXT: fxch %st(1) +; X87-NEXT: fucom %st(1) +; X87-NEXT: fstp %st(1) +; X87-NEXT: fnstsw %ax +; X87-NEXT: # kill: def $ah killed $ah killed $ax +; X87-NEXT: sahf +; X87-NEXT: fld %st(0) +; X87-NEXT: fchs +; X87-NEXT: jae .LBB1_2 +; X87-NEXT: # %bb.1: +; X87-NEXT: fstp %st(1) +; X87-NEXT: fldz +; X87-NEXT: .LBB1_2: +; X87-NEXT: fstp %st(0) +; X87-NEXT: retl +; +; X87UNSAFE-LABEL: test2: +; X87UNSAFE: # %bb.0: +; X87UNSAFE-NEXT: fldl {{[0-9]+}}(%esp) +; X87UNSAFE-NEXT: fabs +; X87UNSAFE-NEXT: retl +; +; X64-LABEL: test2: +; X64: # %bb.0: +; X64-NEXT: movsd {{.*#+}} xmm1 = mem[0],zero +; X64-NEXT: movapd %xmm1, %xmm2 +; X64-NEXT: unpcklpd {{.*#+}} xmm2 = xmm2[0],xmm1[0] +; X64-NEXT: xorpd %xmm0, %xmm2 +; X64-NEXT: cmplesd %xmm0, %xmm1 +; X64-NEXT: movapd %xmm1, %xmm3 +; X64-NEXT: andnpd %xmm2, %xmm3 +; X64-NEXT: andpd %xmm0, %xmm1 +; X64-NEXT: orpd %xmm3, %xmm1 +; X64-NEXT: movapd %xmm1, %xmm0 +; X64-NEXT: retq + %Y = fcmp oge double %X, -0.0 + %Z = fsub double -0.0, %X + %Q = select i1 %Y, double %X, double %Z + ret double %Q } -; fabs is not used here. -; CHECK-NOT: fabs -; NOOPT-NOT: fabs - -; UNSAFE: {{^[ \t]+fabs$}} - -; UNSAFE-NOT: fabs -; CHECK-LABEL: test3: -; UNSAFE-LABEL: test3: -; NOOPT-LABEL: test3: define x86_fp80 @test3(x86_fp80 %X) { - %Y = call x86_fp80 @fabsl(x86_fp80 %X) readnone - ret x86_fp80 %Y +; X87-LABEL: test3: +; X87: # %bb.0: +; X87-NEXT: fldt {{[0-9]+}}(%esp) +; X87-NEXT: fabs +; X87-NEXT: retl +; +; X87UNSAFE-LABEL: test3: +; X87UNSAFE: # %bb.0: +; X87UNSAFE-NEXT: fldt {{[0-9]+}}(%esp) +; X87UNSAFE-NEXT: fabs +; X87UNSAFE-NEXT: retl +; +; X64-LABEL: test3: +; X64: # %bb.0: +; X64-NEXT: fldt {{[0-9]+}}(%rsp) +; X64-NEXT: fabs +; X64-NEXT: retq + %Y = call x86_fp80 @fabsl(x86_fp80 %X) readnone + ret x86_fp80 %Y } -; CHECK: {{^[ \t]+fabs$}} -; UNSAFE: {{^[ \t]+fabs$}} -; NOOPT: {{^[ \t]+fabs$}} -; CHECK-NOT: fabs -; UNSAFE-NOT: fabs -; NOOPT-NOT: fabs |
