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| author | Weiming Zhao <weimingz@codeaurora.org> | 2016-08-03 17:05:23 +0000 |
|---|---|---|
| committer | Weiming Zhao <weimingz@codeaurora.org> | 2016-08-03 17:05:23 +0000 |
| commit | 57dc4cf0e1dc149f05569aee7c5dd8fec04f81b4 (patch) | |
| tree | b556506ad1ad97783d201353a01b6c686411b92a /llvm/test/CodeGen/ARM | |
| parent | 8cf51c340dcb0c150a5dcb8c820c758c781404d9 (diff) | |
| download | bcm5719-llvm-57dc4cf0e1dc149f05569aee7c5dd8fec04f81b4.tar.gz bcm5719-llvm-57dc4cf0e1dc149f05569aee7c5dd8fec04f81b4.zip | |
[ARM] Constant Materialize: imms with specific value can be encoded into mov.w
Summary: Thumb2 supports encoding immediates with specific patterns into mov.w by splatting the low 8 bits into other bytes.
Reviewers: john.brawn, jmolloy
Subscribers: jmolloy, aemerson, rengolin, samparker, llvm-commits
Differential Revision: https://reviews.llvm.org/D23090
llvm-svn: 277610
Diffstat (limited to 'llvm/test/CodeGen/ARM')
| -rw-r--r-- | llvm/test/CodeGen/ARM/subtarget-no-movt.ll | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/ARM/subtarget-no-movt.ll b/llvm/test/CodeGen/ARM/subtarget-no-movt.ll index cb61bde3f9c..aad3c0a2ed6 100644 --- a/llvm/test/CodeGen/ARM/subtarget-no-movt.ll +++ b/llvm/test/CodeGen/ARM/subtarget-no-movt.ll @@ -42,4 +42,21 @@ define i32 @foo1(i32 %a) { ret i32 %1 } +; NO-OPTION-LABEL: {{_?}}foo2 +; NO-OPTION: mov.w r0, #-536813568 +; NO-OPTION-LABEL-NOT: .long + +; USE-MOVT-LABEL: {{_?}}foo2 +; USE-MOVT: mov.w r0, #-536813568 +; USE-MOVT-NOT: .long + +; NO-USE-MOVT-LABEL: {{_?}}foo2 +; NO-USE-MOVT: mov.w r0, #-536813568 +; NO-USE-MOVT-NOT: .long +define i32 @foo2() { + %1 = load i32, i32* inttoptr (i32 -536813568 to i32*) ; load from 0xe000e000 + ret i32 %1 +} + + attributes #0 = { "target-features"="+no-movt" } |
