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Reduce fsub-fadd.ll and merge it into fsub-fsub.ll. Rename fsub-fsub.ll to

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fsub.ll and FileCheckify it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93669 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2010-01-17 00:21:21 +00:00
parent 93ae407ec3
commit 4eb66b8d0e
3 changed files with 23 additions and 47 deletions
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39
test/Transforms/InstCombine/fsub-fadd.ll
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@ -1,39 +0,0 @@
; RUN: opt < %s -instcombine -S | FileCheck %s
; <rdar://problem/7530098>
define void @func(double* %rhi, double* %rlo, double %xh, double %xl, double %yh, double %yl) nounwind ssp {
entry:
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
%tmp = fmul double %xh, 0x41A0000002000000 ; <double> [#uses=2]
%tmp1 = fsub double %xh, %tmp ; <double> [#uses=1]
%tmp2 = fadd double %tmp1, %tmp ; <double> [#uses=3]
%tmp3 = fsub double %xh, %tmp2 ; <double> [#uses=2]
%tmp4 = fmul double %yh, 0x41A0000002000000 ; <double> [#uses=2]
%tmp5 = fsub double %yh, %tmp4 ; <double> [#uses=1]
%tmp6 = fadd double %tmp5, %tmp4 ; <double> [#uses=3]
%tmp7 = fsub double %yh, %tmp6 ; <double> [#uses=2]
%tmp8 = fmul double %xh, %yh ; <double> [#uses=3]
%tmp9 = fmul double %tmp2, %tmp6 ; <double> [#uses=1]
%tmp10 = fsub double %tmp9, %tmp8 ; <double> [#uses=1]
%tmp11 = fmul double %tmp2, %tmp7 ; <double> [#uses=1]
%tmp12 = fadd double %tmp10, %tmp11 ; <double> [#uses=1]
%tmp13 = fmul double %tmp3, %tmp6 ; <double> [#uses=1]
%tmp14 = fadd double %tmp12, %tmp13 ; <double> [#uses=1]
%tmp15 = fmul double %tmp3, %tmp7 ; <double> [#uses=1]
%tmp16 = fadd double %tmp14, %tmp15 ; <double> [#uses=1]
%tmp17 = fmul double %xh, %yl ; <double> [#uses=1]
%tmp18 = fmul double %xl, %yh ; <double> [#uses=1]
%tmp19 = fadd double %tmp17, %tmp18 ; <double> [#uses=1]
%tmp20 = fadd double %tmp19, %tmp16 ; <double> [#uses=2]
%tmp21 = fadd double %tmp8, %tmp20 ; <double> [#uses=1]
store double %tmp21, double* %rhi, align 8
%tmp22 = load double* %rhi, align 8 ; <double> [#uses=1]
%tmp23 = fsub double %tmp8, %tmp22 ; <double> [#uses=1]
%tmp24 = fadd double %tmp23, %tmp20 ; <double> [#uses=1]
; CHECK: %tmp23 = fsub double %tmp8, %tmp21
; CHECK: %tmp24 = fadd double %tmp23, %tmp20
store double %tmp24, double* %rlo, align 8
ret void
}

8
test/Transforms/InstCombine/fsub-fsub.ll
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; RUN: opt < %s -instcombine -S | grep fsub | count 2
; PR4374
define float @func(float %a, float %b) nounwind {
%tmp3 = fsub float %a, %b
%tmp4 = fsub float -0.000000e+00, %tmp3
ret float %tmp4
}

23
test/Transforms/InstCombine/fsub.ll Normal file
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; RUN: opt < %s -instcombine -S | FileCheck %s
; PR4374
define float @test1(float %a, float %b) nounwind {
%t1 = fsub float %a, %b
%t2 = fsub float -0.000000e+00, %t1
; CHECK: %t1 = fsub float %a, %b
; CHECK-NEXT: %t2 = fsub float -0.000000e+00, %t1
ret float %t2
}
; <rdar://problem/7530098>
define double @test2(double %x, double %y) nounwind {
%t1 = fadd double %x, %y
%t2 = fsub double %x, %t1
; CHECK: %t1 = fadd double %x, %y
; CHECK-NEXT: %t2 = fsub double %x, %t1
ret double %t2
}