ce52b80744
This patch causes compile times for some patterns to explode. I have a (large, unreduced) test case that slows down by more than 20x and several test cases slow down by 2x. I'm sending some of the test cases directly to Nirav and following up with more details in the review log, but this should unblock anyone else hitting this. llvm-svn: 296862
70 lines
1.7 KiB
LLVM
70 lines
1.7 KiB
LLVM
; RUN: llc -march=msp430 -combiner-alias-analysis < %s | FileCheck %s
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target datalayout = "e-p:16:8:8-i8:8:8-i16:8:8-i32:8:8"
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target triple = "msp430-generic-generic"
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@foo = common global i16 0, align 2
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@bar = common global i16 0, align 2
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define void @mov() nounwind {
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; CHECK-LABEL: mov:
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; CHECK: mov.w &bar, &foo
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%1 = load i16, i16* @bar
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store i16 %1, i16* @foo
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ret void
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}
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define void @add() nounwind {
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; CHECK-LABEL: add:
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; CHECK: add.w &bar, &foo
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%1 = load i16, i16* @bar
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%2 = load i16, i16* @foo
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%3 = add i16 %2, %1
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store i16 %3, i16* @foo
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ret void
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}
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define void @and() nounwind {
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; CHECK-LABEL: and:
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; CHECK: and.w &bar, &foo
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%1 = load i16, i16* @bar
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%2 = load i16, i16* @foo
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%3 = and i16 %2, %1
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store i16 %3, i16* @foo
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ret void
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}
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define void @bis() nounwind {
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; CHECK-LABEL: bis:
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; CHECK: bis.w &bar, &foo
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%1 = load i16, i16* @bar
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%2 = load i16, i16* @foo
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%3 = or i16 %2, %1
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store i16 %3, i16* @foo
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ret void
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}
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define void @xor() nounwind {
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; CHECK-LABEL: xor:
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; CHECK: xor.w &bar, &foo
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%1 = load i16, i16* @bar
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%2 = load i16, i16* @foo
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%3 = xor i16 %2, %1
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store i16 %3, i16* @foo
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ret void
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}
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define i16 @mov2() nounwind {
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entry:
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%retval = alloca i16 ; <i16*> [#uses=3]
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%x = alloca i32, align 2 ; <i32*> [#uses=1]
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%y = alloca i32, align 2 ; <i32*> [#uses=1]
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store i16 0, i16* %retval
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%tmp = load i32, i32* %y ; <i32> [#uses=1]
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store i32 %tmp, i32* %x
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store i16 0, i16* %retval
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%0 = load i16, i16* %retval ; <i16> [#uses=1]
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ret i16 %0
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; CHECK-LABEL: mov2:
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; CHECK: mov.w 2(r1), 6(r1)
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; CHECK: mov.w 0(r1), 4(r1)
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}
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