[llvm] r262874 - [x86] simplify test and tighten checks
Sanjay Patel via llvm-commits
llvm-commits at lists.llvm.org
Mon Mar 7 14:53:23 PST 2016
Author: spatel
Date: Mon Mar 7 16:53:23 2016
New Revision: 262874
URL: http://llvm.org/viewvc/llvm-project?rev=262874&view=rev
Log:
[x86] simplify test and tighten checks
I noticed this test as part of:
http://reviews.llvm.org/D11393
...which is confusing enough as-is.
Let's show the exact codegen, so the changes will be more obvious.
Modified:
llvm/trunk/test/CodeGen/X86/fp-une-cmp.ll
Modified: llvm/trunk/test/CodeGen/X86/fp-une-cmp.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/fp-une-cmp.ll?rev=262874&r1=262873&r2=262874&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/fp-une-cmp.ll (original)
+++ llvm/trunk/test/CodeGen/X86/fp-une-cmp.ll Mon Mar 7 16:53:23 2016
@@ -1,4 +1,6 @@
-; RUN: llc < %s -march=x86 -mattr=sse4.1 | FileCheck %s
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s
+
; <rdar://problem/7859988>
; Make sure we don't generate more jumps than we need to. We used to generate
@@ -19,25 +21,30 @@
; addsd ...
; LBB0_2:
-; CHECK: func
-; CHECK: jne [[LABEL:.*]]
-; CHECK-NEXT: jp [[LABEL]]
-; CHECK-NOT: jmp
+define double @rdar_7859988(double %x, double %y) nounwind readnone optsize ssp {
+; CHECK-LABEL: rdar_7859988:
+; CHECK: # BB#0: # %entry
+; CHECK-NEXT: mulsd %xmm1, %xmm0
+; CHECK-NEXT: xorpd %xmm1, %xmm1
+; CHECK-NEXT: ucomisd %xmm1, %xmm0
+; CHECK-NEXT: jne .LBB0_2
+; CHECK-NEXT: jp .LBB0_2
+; CHECK-NEXT: # BB#1: # %bb1
+; CHECK-NEXT: addsd {{.*}}(%rip), %xmm0
+; CHECK-NEXT: .LBB0_2: # %bb2
+; CHECK-NEXT: retq
-define float @func(float %x, float %y) nounwind readnone optsize ssp {
entry:
- %0 = fpext float %x to double
- %1 = fpext float %y to double
- %2 = fmul double %0, %1
- %3 = fcmp une double %2, 0.000000e+00
- br i1 %3, label %bb2, label %bb1
+ %mul = fmul double %x, %y
+ %cmp = fcmp une double %mul, 0.000000e+00
+ br i1 %cmp, label %bb2, label %bb1
bb1:
- %4 = fadd double %2, -1.000000e+00
+ %add = fadd double %mul, -1.000000e+00
br label %bb2
bb2:
- %.0.in = phi double [ %4, %bb1 ], [ %2, %entry ]
- %.0 = fptrunc double %.0.in to float
- ret float %.0
+ %phi = phi double [ %add, %bb1 ], [ %mul, %entry ]
+ ret double %phi
}
+
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