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[x86] auto-generate checks for cmov tests

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@267417 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Sanjay Patel 2016-04-25 15:26:57 +00:00
parent 3f30242bbd
commit 6cf0df3c1d
1 changed files with 32 additions and 14 deletions
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46
test/CodeGen/X86/cmov-into-branch.ll
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@ -1,48 +1,66 @@
; RUN: llc -march=x86-64 -mcpu=core2 < %s | FileCheck %s
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: llc -mtriple=x86_64-unknown-unknown < %s | FileCheck %s
; cmp with single-use load, should not form branch.
define i32 @test1(double %a, double* nocapture %b, i32 %x, i32 %y) {
; CHECK-LABEL: test1:
; CHECK: # BB#0:
; CHECK-NEXT: ucomisd (%rdi), %xmm0
; CHECK-NEXT: cmovbel %edx, %esi
; CHECK-NEXT: movl %esi, %eax
; CHECK-NEXT: retq
;
%load = load double, double* %b, align 8
%cmp = fcmp olt double %load, %a
%cond = select i1 %cmp, i32 %x, i32 %y
ret i32 %cond
; CHECK-LABEL: test1:
; CHECK: ucomisd
; CHECK: cmovbel
}
; Sanity check: no load.
define i32 @test2(double %a, double %b, i32 %x, i32 %y) {
; CHECK-LABEL: test2:
; CHECK: # BB#0:
; CHECK-NEXT: ucomisd %xmm1, %xmm0
; CHECK-NEXT: cmovbel %esi, %edi
; CHECK-NEXT: movl %edi, %eax
; CHECK-NEXT: retq
;
%cmp = fcmp ogt double %a, %b
%cond = select i1 %cmp, i32 %x, i32 %y
ret i32 %cond
; CHECK-LABEL: test2:
; CHECK: ucomisd
; CHECK: cmov
}
; Multiple uses of the load.
define i32 @test4(i32 %a, i32* nocapture %b, i32 %x, i32 %y) {
; CHECK-LABEL: test4:
; CHECK: # BB#0:
; CHECK-NEXT: movl (%rsi), %eax
; CHECK-NEXT: cmpl %edi, %eax
; CHECK-NEXT: cmovael %ecx, %edx
; CHECK-NEXT: addl %edx, %eax
; CHECK-NEXT: retq
;
%load = load i32, i32* %b, align 4
%cmp = icmp ult i32 %load, %a
%cond = select i1 %cmp, i32 %x, i32 %y
%add = add i32 %cond, %load
ret i32 %add
; CHECK-LABEL: test4:
; CHECK: cmpl
; CHECK: cmov
}
; Multiple uses of the cmp.
define i32 @test5(i32 %a, i32* nocapture %b, i32 %x, i32 %y) {
; CHECK-LABEL: test5:
; CHECK: # BB#0:
; CHECK-NEXT: cmpl %edi, (%rsi)
; CHECK-NEXT: cmoval %edi, %ecx
; CHECK-NEXT: cmovael %edx, %ecx
; CHECK-NEXT: movl %ecx, %eax
; CHECK-NEXT: retq
;
%load = load i32, i32* %b, align 4
%cmp = icmp ult i32 %load, %a
%cmp1 = icmp ugt i32 %load, %a
%cond = select i1 %cmp1, i32 %a, i32 %y
%cond5 = select i1 %cmp, i32 %cond, i32 %x
ret i32 %cond5
; CHECK-LABEL: test5:
; CHECK: cmpl
; CHECK: cmov
; CHECK: cmov
}