tail-dup-subreg-map.ll
2.48 KB
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; RUN: llc -march=hexagon -hexagon-initial-cfg-cleanup=0 < %s | FileCheck %s
; REQUIRES: asserts
; When tail-duplicating a block with PHI nodes that use subregisters, the
; subregisters were dropped by the tail duplicator, resulting in invalid
; COPY instructions being generated.
; CHECK: = asl(r{{[0-9]+}}:{{[0-9]+}},#15)
target triple = "hexagon"
%struct.0 = type { i64, i16 }
%struct.1 = type { i64, i64 }
declare hidden fastcc void @foo(%struct.0* noalias nocapture, i8 signext, i8 zeroext, i32, i64, i64) unnamed_addr #0
define void @fred(%struct.0* noalias nocapture sret %agg.result, %struct.1* byval nocapture readonly align 8 %a, i32 %a0) #1 {
entry:
%0 = load i64, i64* undef, align 8
switch i32 %a0, label %if.else [
i32 32767, label %if.then
i32 0, label %if.then7
]
if.then: ; preds = %entry
ret void
if.then7: ; preds = %entry
br i1 undef, label %if.then.i, label %if.else16.i
if.then.i: ; preds = %if.then7
br i1 undef, label %if.then5.i, label %if.else.i
if.then5.i: ; preds = %if.then.i
%shl.i21 = shl i64 %0, 0
br label %if.end.i
if.else.i: ; preds = %if.then.i
%shl12.i = shl i64 %0, 7
br label %if.end.i
if.end.i: ; preds = %if.else.i, %if.then5.i
%aSig0.0 = phi i64 [ undef, %if.then5.i ], [ %shl12.i, %if.else.i ]
%storemerge43.i = phi i64 [ %shl.i21, %if.then5.i ], [ 0, %if.else.i ]
%sub15.i = sub nsw i32 -63, 8
br label %if.end13
if.else16.i: ; preds = %if.then7
br label %if.end13
if.else: ; preds = %entry
%or12 = or i64 9, 281474976710656
br label %if.end13
if.end13: ; preds = %if.else, %if.else16.i, %if.end.i
%aSig1.1 = phi i64 [ %0, %if.else ], [ %storemerge43.i, %if.end.i ], [ undef, %if.else16.i ]
%aSig0.2 = phi i64 [ %or12, %if.else ], [ %aSig0.0, %if.end.i ], [ undef, %if.else16.i ]
%aExp.0 = phi i32 [ undef, %if.else ], [ %sub15.i, %if.end.i ], [ undef, %if.else16.i ]
%shl2.i = shl i64 %aSig0.2, 15
%shr.i = lshr i64 %aSig1.1, 49
%or.i = or i64 %shl2.i, %shr.i
tail call fastcc void @foo(%struct.0* noalias %agg.result, i8 signext 80, i8 zeroext undef, i32 %aExp.0, i64 %or.i, i64 undef)
unreachable
}
attributes #0 = { norecurse nounwind }
attributes #1 = { nounwind }