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| author | Nirav Dave <niravd@google.com> | 2019-02-22 16:00:19 +0000 |
|---|---|---|
| committer | Nirav Dave <niravd@google.com> | 2019-02-22 16:00:19 +0000 |
| commit | 44037d7a6377ec8e5542cced73583283334b516b (patch) | |
| tree | 93af796311371909f55eea0320a2569d851b3b8a /llvm/test | |
| parent | a9e289174a1c21698ea0c1f1a43f1f504e5e75ef (diff) | |
| download | bcm5719-llvm-44037d7a6377ec8e5542cced73583283334b516b.tar.gz bcm5719-llvm-44037d7a6377ec8e5542cced73583283334b516b.zip | |
[DAGCombine] Fold overlapping constant stores
Fold a smaller constant store into larger constant stores immediately
preceeding it.
Reviewers: rnk, courbet
Subscribers: javed.absar, hiraditya, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D58468
llvm-svn: 354676
Diffstat (limited to 'llvm/test')
| -rw-r--r-- | llvm/test/CodeGen/AArch64/ldst-paired-aliasing.ll | 4 | ||||
| -rw-r--r-- | llvm/test/CodeGen/PowerPC/constant-combines.ll | 18 | ||||
| -rw-r--r-- | llvm/test/CodeGen/X86/stores-merging.ll | 3 |
3 files changed, 9 insertions, 16 deletions
diff --git a/llvm/test/CodeGen/AArch64/ldst-paired-aliasing.ll b/llvm/test/CodeGen/AArch64/ldst-paired-aliasing.ll index ed72488f411..9bea40656b9 100644 --- a/llvm/test/CodeGen/AArch64/ldst-paired-aliasing.ll +++ b/llvm/test/CodeGen/AArch64/ldst-paired-aliasing.ll @@ -11,8 +11,8 @@ define i32 @main() local_unnamed_addr #1 { ; Make sure the stores happen in the correct order (the exact instructions could change). ; CHECK-LABEL: main: -; CHECK: str xzr, [sp, #80] -; CHECK: str w9, [sp, #80] +; CHECK: orr w9, wzr, #0x1 +; CHECK: str x9, [sp, #80] ; CHECK: stp q0, q0, [sp, #48] ; CHECK: ldr w8, [sp, #48] diff --git a/llvm/test/CodeGen/PowerPC/constant-combines.ll b/llvm/test/CodeGen/PowerPC/constant-combines.ll index b959dc41fb0..bd14509e2ef 100644 --- a/llvm/test/CodeGen/PowerPC/constant-combines.ll +++ b/llvm/test/CodeGen/PowerPC/constant-combines.ll @@ -5,18 +5,15 @@ define void @fold_constant_stores_loaddr(i8* %i8_ptr) { ; BE-LABEL: fold_constant_stores_loaddr: ; BE: # %bb.0: # %entry -; BE-NEXT: li 4, 0 +; BE-NEXT: li 4, 85 +; BE-NEXT: sldi 4, 4, 57 ; BE-NEXT: std 4, 0(3) -; BE-NEXT: li 4, -86 -; BE-NEXT: stb 4, 0(3) ; BE-NEXT: blr ; ; LE-LABEL: fold_constant_stores_loaddr: ; LE: # %bb.0: # %entry -; LE-NEXT: li 4, 0 -; LE-NEXT: li 5, -86 +; LE-NEXT: li 4, 170 ; LE-NEXT: std 4, 0(3) -; LE-NEXT: stb 5, 0(3) ; LE-NEXT: blr entry: %i64_ptr = bitcast i8* %i8_ptr to i64* @@ -29,18 +26,15 @@ entry: define void @fold_constant_stores_hiaddr(i8* %i8_ptr) { ; BE-LABEL: fold_constant_stores_hiaddr: ; BE: # %bb.0: # %entry -; BE-NEXT: li 4, 0 +; BE-NEXT: li 4, 85 +; BE-NEXT: sldi 4, 4, 57 ; BE-NEXT: std 4, 0(3) -; BE-NEXT: li 4, -86 -; BE-NEXT: stb 4, 0(3) ; BE-NEXT: blr ; ; LE-LABEL: fold_constant_stores_hiaddr: ; LE: # %bb.0: # %entry -; LE-NEXT: li 4, 0 -; LE-NEXT: li 5, -86 +; LE-NEXT: li 4, 170 ; LE-NEXT: std 4, 0(3) -; LE-NEXT: stb 5, 0(3) ; LE-NEXT: blr entry: %i64_ptr = bitcast i8* %i8_ptr to i64* diff --git a/llvm/test/CodeGen/X86/stores-merging.ll b/llvm/test/CodeGen/X86/stores-merging.ll index eda7f3a2abf..25c93c3e7a2 100644 --- a/llvm/test/CodeGen/X86/stores-merging.ll +++ b/llvm/test/CodeGen/X86/stores-merging.ll @@ -26,9 +26,8 @@ define void @redundant_stores_merging() { define void @redundant_stores_merging_reverse() { ; CHECK-LABEL: redundant_stores_merging_reverse: ; CHECK: # %bb.0: -; CHECK-NEXT: movabsq $528280977409, %rax # imm = 0x7B00000001 +; CHECK-NEXT: movabsq $1958505086977, %rax # imm = 0x1C800000001 ; CHECK-NEXT: movq %rax, e+{{.*}}(%rip) -; CHECK-NEXT: movl $456, e+{{.*}}(%rip) # imm = 0x1C8 ; CHECK-NEXT: retq store i32 123, i32* getelementptr inbounds (%structTy, %structTy* @e, i64 0, i32 2), align 4 store i32 456, i32* getelementptr inbounds (%structTy, %structTy* @e, i64 0, i32 2), align 4 |
