From f68a6a720cbea1863afd99b49e04b42e34787f97 Mon Sep 17 00:00:00 2001 From: Weiming Zhao Date: Fri, 5 Aug 2016 20:58:29 +0000 Subject: [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. 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 llvm-svn: 277865 --- llvm/test/CodeGen/ARM/subtarget-no-movt.ll | 60 ++++++++++++++++++++++++++++-- 1 file changed, 57 insertions(+), 3 deletions(-) (limited to 'llvm/test/CodeGen/ARM') diff --git a/llvm/test/CodeGen/ARM/subtarget-no-movt.ll b/llvm/test/CodeGen/ARM/subtarget-no-movt.ll index cb61bde3f9c..da535bca069 100644 --- a/llvm/test/CodeGen/ARM/subtarget-no-movt.ll +++ b/llvm/test/CodeGen/ARM/subtarget-no-movt.ll @@ -1,24 +1,40 @@ ; RUN: llc -march thumb -mcpu=cortex-a8 -relocation-model=static %s -o - | FileCheck -check-prefix=NO-OPTION %s ; RUN: llc -march thumb -mcpu=cortex-a8 -relocation-model=static %s -o - -mattr=-no-movt | FileCheck -check-prefix=USE-MOVT %s ; RUN: llc -march thumb -mcpu=cortex-a8 -relocation-model=static %s -o - -mattr=+no-movt | FileCheck -check-prefix=NO-USE-MOVT %s -; RUN: llc -march thumb -mcpu=cortex-a8 -relocation-model=static %s -o - -O0 | FileCheck -check-prefix=NO-OPTION %s -; RUN: llc -march thumb -mcpu=cortex-a8 -relocation-model=static %s -o - -O0 -mattr=-no-movt | FileCheck -check-prefix=USE-MOVT %s -; RUN: llc -march thumb -mcpu=cortex-a8 -relocation-model=static %s -o - -O0 -mattr=+no-movt | FileCheck -check-prefix=NO-USE-MOVT %s +; RUN: llc -march thumb -mcpu=cortex-a8 -relocation-model=static %s -o - -O0 | FileCheck -check-prefix=NO-OPTION-O0 %s +; RUN: llc -march thumb -mcpu=cortex-a8 -relocation-model=static %s -o - -O0 -mattr=-no-movt | FileCheck -check-prefix=USE-MOVT-O0 %s +; RUN: llc -march thumb -mcpu=cortex-a8 -relocation-model=static %s -o - -O0 -mattr=+no-movt | FileCheck -check-prefix=NO-USE-MOVT-O0 %s + +target triple = "thumb-apple-darwin" ; NO-OPTION-LABEL: {{_?}}foo0 ; NO-OPTION: ldr [[R0:r[0-9]+]], [[L0:.*]] ; NO-OPTION: [[L0]]: ; NO-OPTION: .long 2296237089 +; NO-OPTION-O0-LABEL: {{_?}}foo0 +; NO-OPTION-O0: ldr [[R0:r[0-9]+]], [[L0:.*]] +; NO-OPTION-O0: [[L0]]: +; NO-OPTION-O0: .long 2296237089 + ; USE-MOVT-LABEL: {{_?}}foo0 ; USE-MOVT: movw [[R0:r[0-9]+]], #52257 ; USE-MOVT: movt [[R0]], #35037 +; USE-MOVT-O0-LABEL: {{_?}}foo0 +; USE-MOVT-O0: movw [[R0:r[0-9]+]], #52257 +; USE-MOVT-O0: movt [[R0]], #35037 + ; NO-USE-MOVT-LABEL: {{_?}}foo0 ; NO-USE-MOVT: ldr [[R0:r[0-9]+]], [[L0:.*]] ; NO-USE-MOVT: [[L0]]: ; NO-USE-MOVT: .long 2296237089 +; NO-USE-MOVT-O0-LABEL: {{_?}}foo0 +; NO-USE-MOVT-O0: ldr [[R0:r[0-9]+]], [[L0:.*]] +; NO-USE-MOVT-O0: [[L0]]: +; NO-USE-MOVT-O0: .long 2296237089 + define i32 @foo0(i32 %a) #0 { %1 = xor i32 -1998730207, %a ret i32 %1 @@ -28,18 +44,56 @@ define i32 @foo0(i32 %a) #0 { ; NO-OPTION: movw [[R0:r[0-9]+]], #52257 ; NO-OPTION: movt [[R0]], #35037 +; NO-OPTION-O0-LABEL: {{_?}}foo1 +; NO-OPTION-O0: movw [[R0:r[0-9]+]], #52257 +; NO-OPTION-O0: movt [[R0]], #35037 + ; USE-MOVT-LABEL: {{_?}}foo1 ; USE-MOVT: movw [[R0:r[0-9]+]], #52257 ; USE-MOVT: movt [[R0]], #35037 +; USE-MOVT-O0-LABEL: {{_?}}foo1 +; USE-MOVT-O0: movw [[R0:r[0-9]+]], #52257 +; USE-MOVT-O0: movt [[R0]], #35037 + ; NO-USE-MOVT-LABEL: {{_?}}foo1 ; NO-USE-MOVT: ldr [[R0:r[0-9]+]], [[L0:.*]] ; NO-USE-MOVT: [[L0]]: ; NO-USE-MOVT: .long 2296237089 +; NO-USE-MOVT-O0-LABEL: {{_?}}foo1 +; NO-USE-MOVT-O0: ldr [[R0:r[0-9]+]], [[L0:.*]] +; NO-USE-MOVT-O0: [[L0]]: +; NO-USE-MOVT-O0: .long 2296237089 + define i32 @foo1(i32 %a) { %1 = xor i32 -1998730207, %a ret i32 %1 } +; NO-OPTION-LABEL: {{_?}}foo2 +; NO-OPTION: mov.w [[R0:r[0-9]+]], #-536813568 + +; USE-MOVT-LABEL: {{_?}}foo2 +; USE-MOVT: mov.w [[R0:r[0-9]+]], #-536813568 + +; NO-USE-MOVT-LABEL: {{_?}}foo2 +; NO-USE-MOVT: mov.w [[R0:r[0-9]+]], #-536813568 + +; NO-OPTION-O0-LABEL: {{_?}}foo2 +; NO-OPTION-O0: movw [[R0:r[0-9]+]], #57344 +; NO-OPTION-O0: movt [[R0]], #57344 + +; USE-MOVT-O0-LABEL: {{_?}}foo2 +; USE-MOVT-O0: movw [[R0:r[0-9]+]], #57344 +; USE-MOVTT-O0: movt [[R0]], #57344 + +; NO-USE-MOVT-O0-LABEL: {{_?}}foo2 +; NO-USE-MOVT-O0: ldr [[R0:r[0-9]+]], [[L0:.*]] +; NO-USE-MOVT-O0: [[L0]]: +; NO-USE-MOVT-O0: .long 3758153728 @ 0xe000e000 +define i32 @foo2() { + %1 = load i32, i32* inttoptr (i32 -536813568 to i32*) ; load from 0xe000e000 + ret i32 %1 +} attributes #0 = { "target-features"="+no-movt" } -- cgit v1.2.3