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This makes it more likely that we can use the 16-bit push and pop instructions on Thumb-2, saving around 4 bytes per function. Differential Revision: http://reviews.llvm.org/D9165 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235637 91177308-0d34-0410-b5e6-96231b3b80d8
42 lines
1.1 KiB
LLVM
42 lines
1.1 KiB
LLVM
; RUN: llc < %s -march=thumb -mcpu=arm1156t2-s -mattr=+thumb2 \
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; RUN: -mtriple=arm-apple-darwin | FileCheck %s -check-prefix=DARWIN
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; RUN: llc < %s -march=thumb -mcpu=arm1156t2-s -mattr=+thumb2 \
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; RUN: -mtriple=arm-linux-gnueabi | FileCheck %s -check-prefix=LINUX
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define void @test1() {
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; DARWIN-LABEL: test1:
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; DARWIN: sub sp, #256
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; LINUX-LABEL: test1:
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; LINUX: sub sp, #256
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%tmp = alloca [ 64 x i32 ] , align 4
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ret void
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}
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define void @test2() {
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; DARWIN-LABEL: test2:
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; DARWIN: sub.w sp, sp, #4160
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; DARWIN: sub sp, #8
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; LINUX-LABEL: test2:
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; LINUX: sub.w sp, sp, #4160
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; LINUX: sub sp, #8
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%tmp = alloca [ 4168 x i8 ] , align 4
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ret void
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}
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define i32 @test3() {
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; DARWIN-LABEL: test3:
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; DARWIN: push {r4, r7, lr}
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; DARWIN: sub.w sp, sp, #805306368
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; DARWIN: sub sp, #20
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; LINUX-LABEL: test3:
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; LINUX: push {r4, r6, r7, lr}
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; LINUX: sub.w sp, sp, #805306368
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; LINUX: sub sp, #16
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%retval = alloca i32, align 4
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%tmp = alloca i32, align 4
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%a = alloca [805306369 x i8], align 16
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store i32 0, i32* %tmp
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%tmp1 = load i32, i32* %tmp
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ret i32 %tmp1
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}
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