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[SROA] Clean up a test case a bit prior to adding more testing for

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nonnull as part of fixing PR32902.

llvm-svn: 306353
This commit is contained in:
Chandler Carruth 2017-06-27 02:23:15 +00:00
parent c9980d490b
commit 9442c7d24c
1 changed files with 13 additions and 15 deletions
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28
test/Transforms/SROA/preserve-nonnull.ll
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@ -3,22 +3,20 @@
; Make sure that SROA doesn't lose nonnull metadata
; on loads from allocas that get optimized out.
; CHECK-LABEL: define float* @yummy_nonnull
; CHECK: [[RETURN:%(.*)]] = load float*, float** %arg, align 8
; CHECK: [[ASSUME:%(.*)]] = icmp ne float* {{.*}}[[RETURN]], null
; CHECK: call void @llvm.assume(i1 {{.*}}[[ASSUME]])
; CHECK: ret float* {{.*}}[[RETURN]]
define float* @yummy_nonnull(float** %arg) {
entry-block:
%buf = alloca float*
%_arg_i8 = bitcast float** %arg to i8*
%_buf_i8 = bitcast float** %buf to i8*
call void @llvm.memcpy.p0i8.p0i8.i64(i8* %_buf_i8, i8* %_arg_i8, i64 8, i32 8, i1 false)
%ret = load float*, float** %buf, align 8, !nonnull !0
ret float* %ret
; CHECK-LABEL: define float* @yummy_nonnull(
; CHECK-NEXT: entry:
; CHECK-NEXT: %[[RETURN:.*]] = load float*, float** %arg, align 8
; CHECK-NEXT: %[[ASSUME:.*]] = icmp ne float* %[[RETURN]], null
; CHECK-NEXT: call void @llvm.assume(i1 %[[ASSUME]])
; CHECK-NEXT: ret float* %[[RETURN]]
entry:
%buf = alloca float*
%_arg_i8 = bitcast float** %arg to i8*
%_buf_i8 = bitcast float** %buf to i8*
call void @llvm.memcpy.p0i8.p0i8.i64(i8* %_buf_i8, i8* %_arg_i8, i64 8, i32 8, i1 false)
%ret = load float*, float** %buf, align 8, !nonnull !0
ret float* %ret
}
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture writeonly, i8* nocapture readonly, i64, i32, i1)