xref: /aosp_15_r20/external/llvm/test/Transforms/InstCombine/2008-05-08-StrLenSink.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; RUN: opt -S -instcombine < %s | FileCheck %s
2*9880d681SAndroid Build Coastguard Worker; PR2297
3*9880d681SAndroid Build Coastguard Workertarget 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"
4*9880d681SAndroid Build Coastguard Workertarget triple = "i386-apple-darwin8"
5*9880d681SAndroid Build Coastguard Worker
6*9880d681SAndroid Build Coastguard Workerdefine i32 @a() nounwind  {
7*9880d681SAndroid Build Coastguard Workerentry:
8*9880d681SAndroid Build Coastguard Worker	%"alloca point" = bitcast i32 0 to i32		; <i32> [#uses=0]
9*9880d681SAndroid Build Coastguard Worker	%tmp1 = call i8* @malloc( i32 10 ) nounwind 		; <i8*> [#uses=5]
10*9880d681SAndroid Build Coastguard Worker	%tmp3 = getelementptr i8, i8* %tmp1, i32 1		; <i8*> [#uses=1]
11*9880d681SAndroid Build Coastguard Worker	store i8 0, i8* %tmp3, align 1
12*9880d681SAndroid Build Coastguard Worker	%tmp5 = getelementptr i8, i8* %tmp1, i32 0		; <i8*> [#uses=1]
13*9880d681SAndroid Build Coastguard Worker	store i8 1, i8* %tmp5, align 1
14*9880d681SAndroid Build Coastguard Worker; CHECK: store
15*9880d681SAndroid Build Coastguard Worker; CHECK: store
16*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: strlen
17*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: store
18*9880d681SAndroid Build Coastguard Worker	%tmp7 = call i32 @strlen( i8* %tmp1 ) nounwind readonly 		; <i32> [#uses=1]
19*9880d681SAndroid Build Coastguard Worker	%tmp9 = getelementptr i8, i8* %tmp1, i32 0		; <i8*> [#uses=1]
20*9880d681SAndroid Build Coastguard Worker	store i8 0, i8* %tmp9, align 1
21*9880d681SAndroid Build Coastguard Worker	%tmp11 = call i32 (...) @b( i8* %tmp1 ) nounwind 		; <i32> [#uses=0]
22*9880d681SAndroid Build Coastguard Worker	br label %return
23*9880d681SAndroid Build Coastguard Worker
24*9880d681SAndroid Build Coastguard Workerreturn:		; preds = %entry
25*9880d681SAndroid Build Coastguard Worker	ret i32 %tmp7
26*9880d681SAndroid Build Coastguard Worker}
27*9880d681SAndroid Build Coastguard Worker
28*9880d681SAndroid Build Coastguard Workerdeclare i8* @malloc(i32) nounwind
29*9880d681SAndroid Build Coastguard Worker
30*9880d681SAndroid Build Coastguard Workerdeclare i32 @strlen(i8*) nounwind readonly
31*9880d681SAndroid Build Coastguard Worker
32*9880d681SAndroid Build Coastguard Workerdeclare i32 @b(...)
33