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82b9d1c028
Summary: Thumb2 supports encoding immediates with specific patterns into mov.w by splatting the low 8 bits into other bytes. I'm resubmitting this patch. The test case in the original commit r277610 does not specify triple, so builds with differnt default triple will have different output. This patch fixed trile as thumb-darwin-apple. Reviewers: john.brawn, jmolloy, bruno Subscribers: jmolloy, aemerson, rengolin, samparker, llvm-commits Differential Revision: https://reviews.llvm.org/D23090 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@277865 91177308-0d34-0410-b5e6-96231b3b80d8
100 lines
3.1 KiB
LLVM
100 lines
3.1 KiB
LLVM
; RUN: llc -march thumb -mcpu=cortex-a8 -relocation-model=static %s -o - | FileCheck -check-prefix=NO-OPTION %s
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; RUN: llc -march thumb -mcpu=cortex-a8 -relocation-model=static %s -o - -mattr=-no-movt | FileCheck -check-prefix=USE-MOVT %s
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; RUN: llc -march thumb -mcpu=cortex-a8 -relocation-model=static %s -o - -mattr=+no-movt | FileCheck -check-prefix=NO-USE-MOVT %s
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; RUN: llc -march thumb -mcpu=cortex-a8 -relocation-model=static %s -o - -O0 | FileCheck -check-prefix=NO-OPTION-O0 %s
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; RUN: llc -march thumb -mcpu=cortex-a8 -relocation-model=static %s -o - -O0 -mattr=-no-movt | FileCheck -check-prefix=USE-MOVT-O0 %s
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; RUN: llc -march thumb -mcpu=cortex-a8 -relocation-model=static %s -o - -O0 -mattr=+no-movt | FileCheck -check-prefix=NO-USE-MOVT-O0 %s
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target triple = "thumb-apple-darwin"
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; NO-OPTION-LABEL: {{_?}}foo0
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; NO-OPTION: ldr [[R0:r[0-9]+]], [[L0:.*]]
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; NO-OPTION: [[L0]]:
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; NO-OPTION: .long 2296237089
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; NO-OPTION-O0-LABEL: {{_?}}foo0
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; NO-OPTION-O0: ldr [[R0:r[0-9]+]], [[L0:.*]]
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; NO-OPTION-O0: [[L0]]:
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; NO-OPTION-O0: .long 2296237089
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; USE-MOVT-LABEL: {{_?}}foo0
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; USE-MOVT: movw [[R0:r[0-9]+]], #52257
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; USE-MOVT: movt [[R0]], #35037
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; USE-MOVT-O0-LABEL: {{_?}}foo0
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; USE-MOVT-O0: movw [[R0:r[0-9]+]], #52257
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; USE-MOVT-O0: movt [[R0]], #35037
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; NO-USE-MOVT-LABEL: {{_?}}foo0
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; NO-USE-MOVT: ldr [[R0:r[0-9]+]], [[L0:.*]]
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; NO-USE-MOVT: [[L0]]:
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; NO-USE-MOVT: .long 2296237089
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; NO-USE-MOVT-O0-LABEL: {{_?}}foo0
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; NO-USE-MOVT-O0: ldr [[R0:r[0-9]+]], [[L0:.*]]
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; NO-USE-MOVT-O0: [[L0]]:
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; NO-USE-MOVT-O0: .long 2296237089
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define i32 @foo0(i32 %a) #0 {
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%1 = xor i32 -1998730207, %a
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ret i32 %1
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}
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; NO-OPTION-LABEL: {{_?}}foo1
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; NO-OPTION: movw [[R0:r[0-9]+]], #52257
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; NO-OPTION: movt [[R0]], #35037
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; NO-OPTION-O0-LABEL: {{_?}}foo1
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; NO-OPTION-O0: movw [[R0:r[0-9]+]], #52257
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; NO-OPTION-O0: movt [[R0]], #35037
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; USE-MOVT-LABEL: {{_?}}foo1
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; USE-MOVT: movw [[R0:r[0-9]+]], #52257
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; USE-MOVT: movt [[R0]], #35037
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; USE-MOVT-O0-LABEL: {{_?}}foo1
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; USE-MOVT-O0: movw [[R0:r[0-9]+]], #52257
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; USE-MOVT-O0: movt [[R0]], #35037
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; NO-USE-MOVT-LABEL: {{_?}}foo1
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; NO-USE-MOVT: ldr [[R0:r[0-9]+]], [[L0:.*]]
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; NO-USE-MOVT: [[L0]]:
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; NO-USE-MOVT: .long 2296237089
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; NO-USE-MOVT-O0-LABEL: {{_?}}foo1
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; NO-USE-MOVT-O0: ldr [[R0:r[0-9]+]], [[L0:.*]]
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; NO-USE-MOVT-O0: [[L0]]:
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; NO-USE-MOVT-O0: .long 2296237089
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define i32 @foo1(i32 %a) {
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%1 = xor i32 -1998730207, %a
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ret i32 %1
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}
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; NO-OPTION-LABEL: {{_?}}foo2
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; NO-OPTION: mov.w [[R0:r[0-9]+]], #-536813568
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; USE-MOVT-LABEL: {{_?}}foo2
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; USE-MOVT: mov.w [[R0:r[0-9]+]], #-536813568
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; NO-USE-MOVT-LABEL: {{_?}}foo2
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; NO-USE-MOVT: mov.w [[R0:r[0-9]+]], #-536813568
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; NO-OPTION-O0-LABEL: {{_?}}foo2
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; NO-OPTION-O0: movw [[R0:r[0-9]+]], #57344
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; NO-OPTION-O0: movt [[R0]], #57344
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; USE-MOVT-O0-LABEL: {{_?}}foo2
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; USE-MOVT-O0: movw [[R0:r[0-9]+]], #57344
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; USE-MOVTT-O0: movt [[R0]], #57344
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; NO-USE-MOVT-O0-LABEL: {{_?}}foo2
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; NO-USE-MOVT-O0: ldr [[R0:r[0-9]+]], [[L0:.*]]
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; NO-USE-MOVT-O0: [[L0]]:
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; NO-USE-MOVT-O0: .long 3758153728 @ 0xe000e000
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define i32 @foo2() {
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%1 = load i32, i32* inttoptr (i32 -536813568 to i32*) ; load from 0xe000e000
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ret i32 %1
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}
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attributes #0 = { "target-features"="+no-movt" }
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