[llvm] r326735 - [x86] auto-generate full checks for fabs tests

[Sanjay Patel via llvm-commits]

Author: spatel
Date: Mon Mar  5 11:11:20 2018
New Revision: 326735

URL: http://llvm.org/viewvc/llvm-project?rev=326735&view=rev
Log:
[x86] auto-generate full checks for fabs tests

Also, change the x86-64 test to optimized and remove the 
unnecessary platform specification from the RUN lines..

Modified:
    llvm/trunk/test/CodeGen/X86/fabs.ll

Modified: llvm/trunk/test/CodeGen/X86/fabs.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/fabs.ll?rev=326735&r1=326734&r2=326735&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/fabs.ll (original)
+++ llvm/trunk/test/CodeGen/X86/fabs.ll Mon Mar  5 11:11:20 2018
@@ -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