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9b93dd1f1a
when changing the stride of a comparison so that it's slightly more precise, by having it scan the instruction list to determine if there is a use of the condition after the point where the condition will be inserted. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52371 91177308-0d34-0410-b5e6-96231b3b80d8
25 lines
947 B
LLVM
25 lines
947 B
LLVM
; RUN: llvm-as < %s | llc --x86-asm-syntax=att | grep {cmpl \$4}
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
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target triple = "x86_64-apple-darwin9"
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; This is like change-compare-stride-trickiness-1.ll except the comparison
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; happens before the relevant use, so the comparison stride can't be
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; easily changed.
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define void @foo() {
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entry:
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br label %loop
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loop:
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%indvar = phi i32 [ 0, %entry ], [ %i.2.0.us1534, %loop ] ; <i32> [#uses=1]
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%i.2.0.us1534 = add i32 %indvar, 1 ; <i32> [#uses=3]
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%tmp611.us1535 = icmp eq i32 %i.2.0.us1534, 4 ; <i1> [#uses=2]
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%tmp623.us1538 = select i1 %tmp611.us1535, i32 6, i32 0 ; <i32> [#uses=0]
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%tmp628.us1540 = shl i32 %i.2.0.us1534, 1 ; <i32> [#uses=1]
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%tmp645646647.us1547 = sext i32 %tmp628.us1540 to i64 ; <i64> [#uses=0]
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br i1 %tmp611.us1535, label %exit, label %loop
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exit:
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ret void
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}
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