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| author | Anton Korobeynikov <asl@math.spbu.ru> | 2010-05-15 18:16:59 +0000 |
|---|---|---|
| committer | Anton Korobeynikov <asl@math.spbu.ru> | 2010-05-15 18:16:59 +0000 |
| commit | 1bf28a128b735f4b9113520d8e11bc8e3d6fa633 (patch) | |
| tree | 9fd8aa834036b838b988d7700d30dc4f222c3b56 /llvm/test/CodeGen/ARM/mul_const.ll | |
| parent | 58142dd8a1c9d682c7ce14bba3671f6d73dd3083 (diff) | |
| download | bcm5719-llvm-1bf28a128b735f4b9113520d8e11bc8e3d6fa633.tar.gz bcm5719-llvm-1bf28a128b735f4b9113520d8e11bc8e3d6fa633.zip | |
Some cheap DAG combine goodness for multiplication with a particular constant.
This can be extended later on to handle more "complex" constants.
llvm-svn: 103881
Diffstat (limited to 'llvm/test/CodeGen/ARM/mul_const.ll')
| -rw-r--r-- | llvm/test/CodeGen/ARM/mul_const.ll | 34 |
1 files changed, 30 insertions, 4 deletions
diff --git a/llvm/test/CodeGen/ARM/mul_const.ll b/llvm/test/CodeGen/ARM/mul_const.ll index 93188cdd883..8c102464612 100644 --- a/llvm/test/CodeGen/ARM/mul_const.ll +++ b/llvm/test/CodeGen/ARM/mul_const.ll @@ -1,17 +1,43 @@ ; RUN: llc < %s -march=arm | FileCheck %s -define i32 @t1(i32 %v) nounwind readnone { +define i32 @t9(i32 %v) nounwind readnone { entry: -; CHECK: t1: +; CHECK: t9: ; CHECK: add r0, r0, r0, lsl #3 %0 = mul i32 %v, 9 ret i32 %0 } -define i32 @t2(i32 %v) nounwind readnone { +define i32 @t7(i32 %v) nounwind readnone { entry: -; CHECK: t2: +; CHECK: t7: ; CHECK: rsb r0, r0, r0, lsl #3 %0 = mul i32 %v, 7 ret i32 %0 } + +define i32 @t5(i32 %v) nounwind readnone { +entry: +; CHECK: t5: +; CHECK: add r0, r0, r0, lsl #2 + %0 = mul i32 %v, 5 + ret i32 %0 +} + +define i32 @t3(i32 %v) nounwind readnone { +entry: +; CHECK: t3: +; CHECK: add r0, r0, r0, lsl #1 + %0 = mul i32 %v, 3 + ret i32 %0 +} + +define i32 @t12288(i32 %v) nounwind readnone { +entry: +; CHECK: t12288: +; CHECK: add r0, r0, r0, lsl #1 +; CHECK: mov r0, r0, lsl #12 + %0 = mul i32 %v, 12288 + ret i32 %0 +} + |
