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llvm-6502/test/CodeGen/AArch64/arm64-inline-asm.ll
Tim Northover 54a7f7f9e0 AArch64: fix conversion of 'J' inline asm constraints. 
'J' represents a negative number suitable for an add/sub alias
instruction, but while preparing it to become an int64_t we were
mangling the sign extension. So "i32 -1" became 0xffffffffLL, for
example.

Should fix one half of PR20456.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214052 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-27 07:10:29 +00:00

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; RUN: llc < %s -march=arm64 -aarch64-neon-syntax=apple -no-integrated-as | FileCheck %s
; rdar://9167275
define i32 @t1() nounwind ssp {
entry:
; CHECK-LABEL: t1:
; CHECK: mov {{w[0-9]+}}, 7
%0 = tail call i32 asm "mov ${0:w}, 7", "=r"() nounwind
ret i32 %0
}
define i64 @t2() nounwind ssp {
entry:
; CHECK-LABEL: t2:
; CHECK: mov {{x[0-9]+}}, 7
%0 = tail call i64 asm "mov $0, 7", "=r"() nounwind
ret i64 %0
}
define i64 @t3() nounwind ssp {
entry:
; CHECK-LABEL: t3:
; CHECK: mov {{w[0-9]+}}, 7
%0 = tail call i64 asm "mov ${0:w}, 7", "=r"() nounwind
ret i64 %0
}
; rdar://9281206
define void @t4(i64 %op) nounwind {
entry:
; CHECK-LABEL: t4:
; CHECK: mov x0, {{x[0-9]+}}; svc #0
%0 = tail call i64 asm sideeffect "mov x0, $1; svc #0;", "=r,r,r,~{x0}"(i64 %op, i64 undef) nounwind
ret void
}
; rdar://9394290
define float @t5(float %x) nounwind {
entry:
; CHECK-LABEL: t5:
; CHECK: fadd {{s[0-9]+}}, {{s[0-9]+}}, {{s[0-9]+}}
%0 = tail call float asm "fadd ${0:s}, ${0:s}, ${0:s}", "=w,0"(float %x) nounwind
ret float %0
}
; rdar://9553599
define zeroext i8 @t6(i8* %src) nounwind {
entry:
; CHECK-LABEL: t6:
; CHECK: ldtrb {{w[0-9]+}}, [{{x[0-9]+}}]
%0 = tail call i8 asm "ldtrb ${0:w}, [$1]", "=r,r"(i8* %src) nounwind
ret i8 %0
}
define void @t7(i8* %f, i32 %g) nounwind {
entry:
%f.addr = alloca i8*, align 8
store i8* %f, i8** %f.addr, align 8
; CHECK-LABEL: t7:
; CHECK: str {{w[0-9]+}}, [{{x[0-9]+}}]
call void asm "str ${1:w}, $0", "=*Q,r"(i8** %f.addr, i32 %g) nounwind
ret void
}
; rdar://10258229
; ARM64TargetLowering::getRegForInlineAsmConstraint() should recognize 'v'
; registers.
define void @t8() nounwind ssp {
entry:
; CHECK-LABEL: t8:
; CHECK: stp {{d[0-9]+}}, {{d[0-9]+}}, [sp, #-16]
tail call void asm sideeffect "nop", "~{v8}"() nounwind
ret void
}
define i32 @constraint_I(i32 %i, i32 %j) nounwind {
entry:
; CHECK-LABEL: constraint_I:
%0 = tail call i32 asm sideeffect "add ${0:w}, ${1:w}, $2", "=r,r,I"(i32 %i, i32 16773120) nounwind
; CHECK: add {{w[0-9]+}}, {{w[0-9]+}}, #16773120
%1 = tail call i32 asm sideeffect "add ${0:w}, ${1:w}, $2", "=r,r,I"(i32 %i, i32 4096) nounwind
; CHECK: add {{w[0-9]+}}, {{w[0-9]+}}, #4096
ret i32 %1
}
define i32 @constraint_J(i32 %i, i32 %j, i64 %k) nounwind {
entry:
; CHECK-LABEL: constraint_J:
%0 = tail call i32 asm sideeffect "sub ${0:w}, ${1:w}, $2", "=r,r,J"(i32 %i, i32 -16773120) nounwind
; CHECK: sub {{w[0-9]+}}, {{w[0-9]+}}, #-16773120
%1 = tail call i32 asm sideeffect "sub ${0:w}, ${1:w}, $2", "=r,r,J"(i32 %i, i32 -1) nounwind
; CHECK: sub {{w[0-9]+}}, {{w[0-9]+}}, #-1
%2 = tail call i64 asm sideeffect "sub ${0:x}, ${1:x}, $2", "=r,r,J"(i64 %k, i32 -1) nounwind
; CHECK: sub {{x[0-9]+}}, {{x[0-9]+}}, #-1
%3 = tail call i64 asm sideeffect "sub ${0:x}, ${1:x}, $2", "=r,r,J"(i64 %k, i64 -1) nounwind
; CHECK: sub {{x[0-9]+}}, {{x[0-9]+}}, #-1
ret i32 %1
}
define i32 @constraint_KL(i32 %i, i32 %j) nounwind {
entry:
; CHECK-LABEL: constraint_KL:
%0 = tail call i32 asm sideeffect "eor ${0:w}, ${1:w}, $2", "=r,r,K"(i32 %i, i32 255) nounwind
; CHECK: eor {{w[0-9]+}}, {{w[0-9]+}}, #255
%1 = tail call i32 asm sideeffect "eor ${0:w}, ${1:w}, $2", "=r,r,L"(i32 %i, i64 16711680) nounwind
; CHECK: eor {{w[0-9]+}}, {{w[0-9]+}}, #16711680
ret i32 %1
}
define i32 @constraint_MN(i32 %i, i32 %j) nounwind {
entry:
; CHECK-LABEL: constraint_MN:
%0 = tail call i32 asm sideeffect "movk ${0:w}, $1", "=r,M"(i32 65535) nounwind
; CHECK: movk {{w[0-9]+}}, #65535
%1 = tail call i32 asm sideeffect "movz ${0:w}, $1", "=r,N"(i64 0) nounwind
; CHECK: movz {{w[0-9]+}}, #0
ret i32 %1
}
define void @t9() nounwind {
entry:
; CHECK-LABEL: t9:
%data = alloca <2 x double>, align 16
%0 = load <2 x double>* %data, align 16
call void asm sideeffect "mov.2d v4, $0\0A", "w,~{v4}"(<2 x double> %0) nounwind
; CHECK: mov.2d v4, {{v[0-9]+}}
ret void
}
define void @t10() nounwind {
entry:
; CHECK-LABEL: t10:
%data = alloca <2 x float>, align 8
%a = alloca [2 x float], align 4
%arraydecay = getelementptr inbounds [2 x float]* %a, i32 0, i32 0
%0 = load <2 x float>* %data, align 8
call void asm sideeffect "ldr ${1:q}, [$0]\0A", "r,w"(float* %arraydecay, <2 x float> %0) nounwind
; CHECK: ldr {{q[0-9]+}}, [{{x[0-9]+}}]
call void asm sideeffect "ldr ${1:d}, [$0]\0A", "r,w"(float* %arraydecay, <2 x float> %0) nounwind
; CHECK: ldr {{d[0-9]+}}, [{{x[0-9]+}}]
call void asm sideeffect "ldr ${1:s}, [$0]\0A", "r,w"(float* %arraydecay, <2 x float> %0) nounwind
; CHECK: ldr {{s[0-9]+}}, [{{x[0-9]+}}]
call void asm sideeffect "ldr ${1:h}, [$0]\0A", "r,w"(float* %arraydecay, <2 x float> %0) nounwind
; CHECK: ldr {{h[0-9]+}}, [{{x[0-9]+}}]
call void asm sideeffect "ldr ${1:b}, [$0]\0A", "r,w"(float* %arraydecay, <2 x float> %0) nounwind
; CHECK: ldr {{b[0-9]+}}, [{{x[0-9]+}}]
ret void
}
define void @t11() nounwind {
entry:
; CHECK-LABEL: t11:
%a = alloca i32, align 4
%0 = load i32* %a, align 4
call void asm sideeffect "mov ${1:x}, ${0:x}\0A", "r,i"(i32 %0, i32 0) nounwind
; CHECK: mov xzr, {{x[0-9]+}}
%1 = load i32* %a, align 4
call void asm sideeffect "mov ${1:w}, ${0:w}\0A", "r,i"(i32 %1, i32 0) nounwind
; CHECK: mov wzr, {{w[0-9]+}}
ret void
}
define void @t12() nounwind {
entry:
; CHECK-LABEL: t12:
%data = alloca <4 x float>, align 16
%0 = load <4 x float>* %data, align 16
call void asm sideeffect "mov.2d v4, $0\0A", "x,~{v4}"(<4 x float> %0) nounwind
; CHECK mov.2d v4, {{v([0-9])|(1[0-5])}}
ret void
}
define void @t13() nounwind {
entry:
; CHECK-LABEL: t13:
tail call void asm sideeffect "mov x4, $0\0A", "N"(i64 1311673391471656960) nounwind
; CHECK: mov x4, #1311673391471656960
tail call void asm sideeffect "mov x4, $0\0A", "N"(i64 -4662) nounwind
; CHECK: mov x4, #-4662
tail call void asm sideeffect "mov x4, $0\0A", "N"(i64 4660) nounwind
; CHECK: mov x4, #4660
call void asm sideeffect "mov x4, $0\0A", "N"(i64 -71777214294589696) nounwind
; CHECK: mov x4, #-71777214294589696
ret void
}
define void @t14() nounwind {
entry:
; CHECK-LABEL: t14:
tail call void asm sideeffect "mov w4, $0\0A", "M"(i32 305397760) nounwind
; CHECK: mov w4, #305397760
tail call void asm sideeffect "mov w4, $0\0A", "M"(i32 -4662) nounwind
; CHECK: mov w4, #4294962634
tail call void asm sideeffect "mov w4, $0\0A", "M"(i32 4660) nounwind
; CHECK: mov w4, #4660
call void asm sideeffect "mov w4, $0\0A", "M"(i32 -16711936) nounwind
; CHECK: mov w4, #4278255360
ret void
}
define void @t15() nounwind {
entry:
%0 = tail call double asm sideeffect "fmov $0, d8", "=r"() nounwind
; CHECK: fmov {{x[0-9]+}}, d8
ret void
}
; rdar://problem/14285178
define void @test_zero_reg(i32* %addr) {
; CHECK-LABEL: test_zero_reg:
tail call void asm sideeffect "USE($0)", "z"(i32 0) nounwind
; CHECK: USE(xzr)
tail call void asm sideeffect "USE(${0:w})", "zr"(i32 0)
; CHECK: USE(wzr)
tail call void asm sideeffect "USE(${0:w})", "zr"(i32 1)
; CHECK: orr [[VAL1:w[0-9]+]], wzr, #0x1
; CHECK: USE([[VAL1]])
tail call void asm sideeffect "USE($0), USE($1)", "z,z"(i32 0, i32 0) nounwind
; CHECK: USE(xzr), USE(xzr)
tail call void asm sideeffect "USE($0), USE(${1:w})", "z,z"(i32 0, i32 0) nounwind
; CHECK: USE(xzr), USE(wzr)
ret void
}
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