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https://github.com/c64scene-ar/llvm-6502.git
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554daa67bd
more callee-saved registers and introduce copies. Only allows it if scheduling a node above calls would end up lessen register pressure. Call operands also has added ABI restrictions for register allocation, so be extra careful with hoisting them above calls. rdar://9329627 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130245 91177308-0d34-0410-b5e6-96231b3b80d8
73 lines
1.8 KiB
LLVM
73 lines
1.8 KiB
LLVM
; RUN: llc < %s -mtriple=armv7-apple-darwin -mcpu=cortex-a8 | FileCheck %s -check-prefix=A8
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; RUN: llc < %s -mtriple=armv7-apple-darwin -mcpu=cortex-a9 | FileCheck %s -check-prefix=A9
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; rdar://8576755
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define i32 @test1(i32 %X, i32 %Y, i8 %sh) {
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; A8: test1:
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; A8: add r0, r0, r1, lsl r2
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; A9: test1:
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; A9: add r0, r0, r1, lsl r2
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%shift.upgrd.1 = zext i8 %sh to i32
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%A = shl i32 %Y, %shift.upgrd.1
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%B = add i32 %X, %A
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ret i32 %B
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}
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define i32 @test2(i32 %X, i32 %Y, i8 %sh) {
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; A8: test2:
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; A8: bic r0, r0, r1, asr r2
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; A9: test2:
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; A9: bic r0, r0, r1, asr r2
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%shift.upgrd.2 = zext i8 %sh to i32
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%A = ashr i32 %Y, %shift.upgrd.2
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%B = xor i32 %A, -1
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%C = and i32 %X, %B
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ret i32 %C
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}
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define i32 @test3(i32 %base, i32 %base2, i32 %offset) {
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entry:
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; A8: test3:
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; A8: ldr r0, [r0, r2, lsl #2]
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; A8: ldr r1, [r1, r2, lsl #2]
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; lsl #2 is free
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; A9: test3:
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; A9: ldr r0, [r0, r2, lsl #2]
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; A9: ldr r1, [r1, r2, lsl #2]
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%tmp1 = shl i32 %offset, 2
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%tmp2 = add i32 %base, %tmp1
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%tmp3 = inttoptr i32 %tmp2 to i32*
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%tmp4 = add i32 %base2, %tmp1
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%tmp5 = inttoptr i32 %tmp4 to i32*
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%tmp6 = load i32* %tmp3
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%tmp7 = load i32* %tmp5
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%tmp8 = add i32 %tmp7, %tmp6
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ret i32 %tmp8
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}
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declare i8* @malloc(...)
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define fastcc void @test4(i16 %addr) nounwind {
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entry:
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; A8: test4:
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; A8: ldr r2, [r0, r1, lsl #2]
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; A8: str r2, [r0, r1, lsl #2]
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; A9: test4:
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; A9: add r0, r0, r{{[0-9]+}}, lsl #2
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; A9: ldr r1, [r0]
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; A9: str r1, [r0]
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%0 = tail call i8* (...)* @malloc(i32 undef) nounwind
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%1 = bitcast i8* %0 to i32*
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%2 = sext i16 %addr to i32
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%3 = getelementptr inbounds i32* %1, i32 %2
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%4 = load i32* %3, align 4
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%5 = add nsw i32 %4, 1
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store i32 %5, i32* %3, align 4
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ret void
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}
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