diff options
| author | Tim Northover <tnorthover@apple.com> | 2017-05-03 16:54:30 +0000 |
|---|---|---|
| committer | Tim Northover <tnorthover@apple.com> | 2017-05-03 16:54:30 +0000 |
| commit | 761bcdaf066f55075989dac2dbf0ebb148198ee0 (patch) | |
| tree | 873e746c03294621d022b814b223294f201482d4 | |
| parent | a7cad4fcb7434e42d1387477c42a7546b9f27259 (diff) | |
| download | bcm5719-llvm-761bcdaf066f55075989dac2dbf0ebb148198ee0.tar.gz bcm5719-llvm-761bcdaf066f55075989dac2dbf0ebb148198ee0.zip | |
ARM: add extra test for addrmode folding.
I was worried we might replace a mul with a mul+shift even if there were later
uses. Turns out to be unfounded but I'd just as well add an actual test for it.
llvm-svn: 302051
| -rw-r--r-- | llvm/test/CodeGen/ARM/load-arm.ll | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/ARM/load-arm.ll b/llvm/test/CodeGen/ARM/load-arm.ll index 94ade49a121..3807424ece8 100644 --- a/llvm/test/CodeGen/ARM/load-arm.ll +++ b/llvm/test/CodeGen/ARM/load-arm.ll @@ -15,3 +15,14 @@ define i32 @addrmode_cse_mutation(i8* %base, i32 %count) { %res = mul i32 %count, 34661 ret i32 %res } + +; CHECK-LABEL: addrmode_cse_multi_use: +; CHECK-NOT: {{ldrb|ldrb.w}} {{r[0-9]+}}, [{{r[0-9]+}}, {{r[0-9]+}}, lsl #3] +define i32 @addrmode_cse_multi_use(i8* %base, i32 %count) { + %offset = mul i32 %count, 277288 + %ptr = getelementptr i8, i8* %base, i32 %offset + %val = load volatile i8, i8* %ptr + %res = mul i32 %count, 34661 + %res.1 = add i32 %res, %offset + ret i32 %res.1 +} |
