diff options
Diffstat (limited to 'llvm/test/CodeGen/X86')
| -rw-r--r-- | llvm/test/CodeGen/X86/MergeConsecutiveStores.ll | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/MergeConsecutiveStores.ll b/llvm/test/CodeGen/X86/MergeConsecutiveStores.ll index 4303b625446..906ca2fef68 100644 --- a/llvm/test/CodeGen/X86/MergeConsecutiveStores.ll +++ b/llvm/test/CodeGen/X86/MergeConsecutiveStores.ll @@ -582,3 +582,28 @@ define void @merge_vec_element_and_scalar_load([6 x i64]* %array) { ; CHECK-NEXT: movq %rcx, 40(%rdi) ; CHECK-NEXT: retq } + + + +; Don't let a non-consecutive store thwart merging of the last two. +define void @almost_consecutive_stores(i8* %p) { + store i8 0, i8* %p + %p1 = getelementptr i8, i8* %p, i64 42 + store i8 1, i8* %p1 + %p2 = getelementptr i8, i8* %p, i64 2 + store i8 2, i8* %p2 + %p3 = getelementptr i8, i8* %p, i64 3 + store i8 3, i8* %p3 + ret void +; CHECK-LABEL: almost_consecutive_stores +; CHECK-DAG: movb $0, (%rdi) +; CHECK-DAG: movb $1, 42(%rdi) +; CHECK-DAG: movb $2, 2(%rdi) +; CHECK-DAG: movb $3, 3(%rdi) +; CHECK: retq + +; We should able to merge the final two stores into a 16-bit store +; FIXMECHECK-DAG: movw $770, 2(%rdi) + + +} |
