mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-15 04:30:12 +00:00
c1be92f3bb
does normal initialization and normal chaining. Change the default AliasAnalysis implementation to NoAlias. Update StandardCompileOpts.h and friends to explicitly request BasicAliasAnalysis. Update tests to explicitly request -basicaa. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116720 91177308-0d34-0410-b5e6-96231b3b80d8
47 lines
1.5 KiB
LLVM
47 lines
1.5 KiB
LLVM
; RUN: opt < %s -basicaa -gvn -S | grep {DEAD = phi i32 }
|
|
|
|
; GVN should eliminate the fully redundant %9 GEP which
|
|
; allows DEAD to be removed. This is PR3198.
|
|
|
|
; The %7 and %4 loads combine to make %DEAD unneeded.
|
|
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"
|
|
target triple = "i386-apple-darwin7"
|
|
@H = common global [100 x i32] zeroinitializer, align 32 ; <[100 x i32]*> [#uses=3]
|
|
@G = common global i32 0 ; <i32*> [#uses=2]
|
|
|
|
define i32 @test(i32 %i) nounwind {
|
|
entry:
|
|
%0 = tail call i32 (...)* @foo() nounwind ; <i32> [#uses=1]
|
|
%1 = icmp eq i32 %0, 0 ; <i1> [#uses=1]
|
|
br i1 %1, label %bb1, label %bb
|
|
|
|
bb: ; preds = %entry
|
|
%2 = tail call i32 (...)* @bar() nounwind ; <i32> [#uses=0]
|
|
%3 = getelementptr [100 x i32]* @H, i32 0, i32 %i ; <i32*> [#uses=1]
|
|
%4 = load i32* %3, align 4 ; <i32> [#uses=1]
|
|
store i32 %4, i32* @G, align 4
|
|
br label %bb3
|
|
|
|
bb1: ; preds = %entry
|
|
%5 = tail call i32 (...)* @baz() nounwind ; <i32> [#uses=0]
|
|
%6 = getelementptr [100 x i32]* @H, i32 0, i32 %i ; <i32*> [#uses=1]
|
|
%7 = load i32* %6, align 4 ; <i32> [#uses=2]
|
|
store i32 %7, i32* @G, align 4
|
|
%8 = icmp eq i32 %7, 0 ; <i1> [#uses=1]
|
|
br i1 %8, label %bb3, label %bb4
|
|
|
|
bb3: ; preds = %bb1, %bb
|
|
%9 = getelementptr [100 x i32]* @H, i32 0, i32 %i ; <i32*> [#uses=1]
|
|
%DEAD = load i32* %9, align 4 ; <i32> [#uses=1]
|
|
ret i32 %DEAD
|
|
|
|
bb4: ; preds = %bb1
|
|
ret i32 0
|
|
}
|
|
|
|
declare i32 @foo(...)
|
|
|
|
declare i32 @bar(...)
|
|
|
|
declare i32 @baz(...)
|