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llvm-mirror/test/CodeGen/ARM/inlineasm3.ll
Diana Picus 637c98a18d [ARM] Skip inline asm memory operands in DAGToDAGISel
Retry r275776 (no changes, we suspect the issue was with another commit).

The current logic for handling inline asm operands in DAGToDAGISel interprets
the operands by looking for constants, which should represent the flags
describing the kind of operand we're dealing with (immediate, memory, register
def etc). The operands representing actual data are skipped only if they are
non-const, with the exception of immediate operands which are skipped explicitly
when a flag describing an immediate is found.

The oversight is that memory operands may be const too (e.g. for device drivers
reading a fixed address), so we should explicitly skip the operand following a
flag describing a memory operand. If we don't, we risk interpreting that
constant as a flag, which is definitely not intended.

Fixes PR26038

Differential Revision: https://reviews.llvm.org/D22103

llvm-svn: 276101
2016-07-20 09:48:24 +00:00

135 lines
3.0 KiB
LLVM

; RUN: llc -mtriple=arm-eabi -float-abi=soft -mattr=+neon,+v6t2 -no-integrated-as %s -o - \
; RUN: | FileCheck %s
; Radar 7449043
%struct.int32x4_t = type { <4 x i32> }
define void @t() nounwind {
entry:
; CHECK: vmov.I64 q15, #0
; CHECK: vmov.32 d30[0],
; CHECK: vmov q8, q15
%tmp = alloca %struct.int32x4_t, align 16
call void asm sideeffect "vmov.I64 q15, #0\0Avmov.32 d30[0], $1\0Avmov ${0:q}, q15\0A", "=*w,r,~{d31},~{d30}"(%struct.int32x4_t* %tmp, i32 8192) nounwind
ret void
}
; Radar 7457110
%struct.int32x2_t = type { <4 x i32> }
define void @t2() nounwind {
entry:
; CHECK: vmov d30, d16
; CHECK: vmov.32 r0, d30[0]
%asmtmp2 = tail call i32 asm sideeffect "vmov d30, $1\0Avmov.32 $0, d30[0]\0A", "=r,w,~{d30}"(<2 x i32> undef) nounwind
ret void
}
; Radar 9306086
%0 = type { <8 x i8>, <16 x i8>* }
define hidden void @conv4_8_E() nounwind {
entry:
%asmtmp31 = call %0 asm "vld1.u8 {$0}, [$1:128]!\0A", "=w,=r,1"(<16 x i8>* undef) nounwind
unreachable
}
; Radar 9037836 & 9119939
define i32 @t3() nounwind {
entry:
tail call void asm sideeffect "flds s15, $0 \0A", "^Uv|m,~{s15}"(float 1.000000e+00) nounwind
ret i32 0
}
; Radar 9037836 & 9119939
@k.2126 = internal unnamed_addr global float 1.000000e+00
define i32 @t4() nounwind {
entry:
call void asm sideeffect "flds s15, $0 \0A", "*^Uv,~{s15}"(float* @k.2126) nounwind
ret i32 0
}
; Radar 9037836 & 9119939
define i32 @t5() nounwind {
entry:
call void asm sideeffect "flds s15, $0 \0A", "*^Uvm,~{s15}"(float* @k.2126) nounwind
ret i32 0
}
; Radar 9307836 & 9119939
define float @t6(float %y) nounwind {
entry:
; CHECK: t6
; CHECK: flds s15, s0
%0 = tail call float asm "flds s15, $0", "=x"() nounwind
ret float %0
}
; Radar 9307836 & 9119939
define double @t7(double %y) nounwind {
entry:
; CHECK: t7
; CHECK: flds s15, d0
%0 = tail call double asm "flds s15, $0", "=x"() nounwind
ret double %0
}
; Radar 9307836 & 9119939
define float @t8(float %y) nounwind {
entry:
; CHECK: t8
; CHECK: flds s15, s0
%0 = tail call float asm "flds s15, $0", "=t"() nounwind
ret float %0
}
; Radar 9307836 & 9119939
define i32 @t9(i32 %r0) nounwind {
entry:
; CHECK: t9
; CHECK: movw r0, #27182
%0 = tail call i32 asm "movw $0, $1", "=r,j"(i32 27182) nounwind
ret i32 %0
}
; Radar 9866494
define void @t10(i8* %f, i32 %g) nounwind {
entry:
; CHECK: t10
; CHECK: str r1, [r0]
%f.addr = alloca i8*, align 4
store i8* %f, i8** %f.addr, align 4
call void asm "str $1, $0", "=*Q,r"(i8** %f.addr, i32 %g) nounwind
ret void
}
; Radar 10551006
define <4 x i32> @t11(i32* %p) nounwind {
entry:
; CHECK: t11
; CHECK: vld1.s32 {d16[], d17[]}, [r0]
%0 = tail call <4 x i32> asm "vld1.s32 {${0:e}[], ${0:f}[]}, [$1]", "=w,r"(i32* %p) nounwind
ret <4 x i32> %0
}
; Bugzilla PR26038
define i32 @fn1() local_unnamed_addr nounwind {
; CHECK-LABEL: fn1
entry:
; CHECK: mov [[addr:r[0-9]+]], #5
; CHECK: ldrh {{.*}}[[addr]]
%0 = tail call i32 asm "ldrh $0, $1", "=r,*Q"(i8* inttoptr (i32 5 to i8*)) nounwind
ret i32 %0
}