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https://github.com/c64scene-ar/llvm-6502.git
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c48b3bf318
On PowerPC, inline asm memory operands might be expanded as 0($r), where $r is a register containing the address. As a result, this register cannot be r0, and we need to enforce this register subclass constraint to prevent miscompiling the code (we'd get this constraint for free with the usual instruction definitions, but that scheme has no knowledge of how we end up printing inline asm memory operands, and so here we need to do it 'by hand'). We can accomplish this within the current address-mode selection framework by introducing an explicit COPY_TO_REGCLASS node. Fixes PR21443. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223318 91177308-0d34-0410-b5e6-96231b3b80d8
95 lines
3.7 KiB
LLVM
95 lines
3.7 KiB
LLVM
; RUN: llc -mcpu=pwr7 < %s | FileCheck %s
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target datalayout = "e-m:e-i64:64-n32:64"
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target triple = "powerpc64le-unknown-linux-gnu"
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; Make sure that we don't generate a std r, 0(0) -- the memory address cannot
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; be stored in r0.
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; CHECK-LABEL: @test1
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; CHECK-NOT: std {{[0-9]+}}, 0(0)
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; CHECK: blr
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define void @test1({ i8*, void (i8*, i8*)* } %fn_arg) {
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%fn = alloca { i8*, void (i8*, i8*)* }
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%sp = alloca i8*, align 8
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%regs = alloca [18 x i64], align 8
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store { i8*, void (i8*, i8*)* } %fn_arg, { i8*, void (i8*, i8*)* }* %fn
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%1 = bitcast [18 x i64]* %regs to i64*
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call void asm sideeffect "std 14, $0", "=*m"(i64* %1)
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%2 = bitcast [18 x i64]* %regs to i8*
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%3 = getelementptr i8* %2, i32 8
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%4 = bitcast i8* %3 to i64*
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call void asm sideeffect "std 15, $0", "=*m"(i64* %4)
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%5 = bitcast [18 x i64]* %regs to i8*
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%6 = getelementptr i8* %5, i32 16
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%7 = bitcast i8* %6 to i64*
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call void asm sideeffect "std 16, $0", "=*m"(i64* %7)
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%8 = bitcast [18 x i64]* %regs to i8*
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%9 = getelementptr i8* %8, i32 24
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%10 = bitcast i8* %9 to i64*
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call void asm sideeffect "std 17, $0", "=*m"(i64* %10)
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%11 = bitcast [18 x i64]* %regs to i8*
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%12 = getelementptr i8* %11, i32 32
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%13 = bitcast i8* %12 to i64*
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call void asm sideeffect "std 18, $0", "=*m"(i64* %13)
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%14 = bitcast [18 x i64]* %regs to i8*
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%15 = getelementptr i8* %14, i32 40
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%16 = bitcast i8* %15 to i64*
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call void asm sideeffect "std 19, $0", "=*m"(i64* %16)
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%17 = bitcast [18 x i64]* %regs to i8*
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%18 = getelementptr i8* %17, i32 48
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%19 = bitcast i8* %18 to i64*
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call void asm sideeffect "std 20, $0", "=*m"(i64* %19)
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%20 = bitcast [18 x i64]* %regs to i8*
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%21 = getelementptr i8* %20, i32 56
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%22 = bitcast i8* %21 to i64*
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call void asm sideeffect "std 21, $0", "=*m"(i64* %22)
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%23 = bitcast [18 x i64]* %regs to i8*
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%24 = getelementptr i8* %23, i32 64
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%25 = bitcast i8* %24 to i64*
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call void asm sideeffect "std 22, $0", "=*m"(i64* %25)
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%26 = bitcast [18 x i64]* %regs to i8*
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%27 = getelementptr i8* %26, i32 72
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%28 = bitcast i8* %27 to i64*
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call void asm sideeffect "std 23, $0", "=*m"(i64* %28)
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%29 = bitcast [18 x i64]* %regs to i8*
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%30 = getelementptr i8* %29, i32 80
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%31 = bitcast i8* %30 to i64*
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call void asm sideeffect "std 24, $0", "=*m"(i64* %31)
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%32 = bitcast [18 x i64]* %regs to i8*
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%33 = getelementptr i8* %32, i32 88
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%34 = bitcast i8* %33 to i64*
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call void asm sideeffect "std 25, $0", "=*m"(i64* %34)
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%35 = bitcast [18 x i64]* %regs to i8*
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%36 = getelementptr i8* %35, i32 96
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%37 = bitcast i8* %36 to i64*
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call void asm sideeffect "std 26, $0", "=*m"(i64* %37)
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%38 = bitcast [18 x i64]* %regs to i8*
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%39 = getelementptr i8* %38, i32 104
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%40 = bitcast i8* %39 to i64*
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call void asm sideeffect "std 27, $0", "=*m"(i64* %40)
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%41 = bitcast [18 x i64]* %regs to i8*
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%42 = getelementptr i8* %41, i32 112
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%43 = bitcast i8* %42 to i64*
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call void asm sideeffect "std 28, $0", "=*m"(i64* %43)
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%44 = bitcast [18 x i64]* %regs to i8*
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%45 = getelementptr i8* %44, i32 120
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%46 = bitcast i8* %45 to i64*
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call void asm sideeffect "std 29, $0", "=*m"(i64* %46)
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%47 = bitcast [18 x i64]* %regs to i8*
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%48 = getelementptr i8* %47, i32 128
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%49 = bitcast i8* %48 to i64*
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call void asm sideeffect "std 30, $0", "=*m"(i64* %49)
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%50 = bitcast [18 x i64]* %regs to i8*
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%51 = getelementptr i8* %50, i32 136
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%52 = bitcast i8* %51 to i64*
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call void asm sideeffect "std 31, $0", "=*m"(i64* %52)
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%53 = getelementptr { i8*, void (i8*, i8*)* }* %fn, i32 0, i32 1
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%.funcptr = load void (i8*, i8*)** %53
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%54 = getelementptr { i8*, void (i8*, i8*)* }* %fn, i32 0, i32 0
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%.ptr = load i8** %54
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%55 = load i8** %sp
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call void %.funcptr(i8* %.ptr, i8* %55)
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ret void
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}
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