forked from OSchip/llvm-project
29 lines
796 B
LLVM
29 lines
796 B
LLVM
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; RUN: opt < %s -gvn -S | FileCheck %s
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; XFAIL: *
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; FIXME: This should be promotable, but memdep/gvn don't track values
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; path/edge sensitively enough.
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
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target triple = "i386-apple-darwin7"
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define i32 @g(i32* %b, i32* %c) nounwind {
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entry:
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store i32 1, i32* %b
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store i32 2, i32* %c
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%t1 = icmp eq i32* %b, null ; <i1> [#uses=1]
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br i1 %t1, label %bb, label %bb2
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bb: ; preds = %entry
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br label %bb2
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bb2: ; preds = %bb1, %bb
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%c_addr.0 = phi i32* [ %b, %entry ], [ %c, %bb ] ; <i32*> [#uses=1]
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%cv = load i32, i32* %c_addr.0, align 4 ; <i32> [#uses=1]
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ret i32 %cv
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; CHECK: bb2:
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; CHECK-NOT: load i32
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; CHECK: ret i32
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}
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