bit-has.ll
1.81 KB
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; RUN: llc -march=hexagon -hexagon-initial-cfg-cleanup=0 < %s | FileCheck %s
; REQUIRES: asserts
; This used to crash. Check for some sane output.
; CHECK: sath
target triple = "hexagon"
define void @fred() local_unnamed_addr #0 {
b0:
%v1 = load i32, i32* undef, align 4
%v2 = tail call i32 @llvm.hexagon.A2.sath(i32 undef)
%v3 = and i32 %v1, 603979776
%v4 = trunc i32 %v3 to i30
switch i30 %v4, label %b22 [
i30 -536870912, label %b5
i30 -469762048, label %b6
]
b5: ; preds = %b0
unreachable
b6: ; preds = %b0
%v7 = load i32, i32* undef, align 4
%v8 = sub nsw i32 65536, %v7
%v9 = load i32, i32* undef, align 4
%v10 = mul nsw i32 %v9, %v9
%v11 = zext i32 %v10 to i64
%v12 = mul nsw i32 %v2, %v8
%v13 = sext i32 %v12 to i64
%v14 = mul nsw i64 %v13, %v11
%v15 = trunc i64 %v14 to i32
%v16 = and i32 %v15, 2147483647
store i32 %v16, i32* undef, align 4
%v17 = lshr i64 %v14, 31
%v18 = trunc i64 %v17 to i32
store i32 %v18, i32* undef, align 4
br label %b19
b19: ; preds = %b6
br i1 undef, label %b20, label %b21
b20: ; preds = %b19
unreachable
b21: ; preds = %b19
br label %b23
b22: ; preds = %b0
unreachable
b23: ; preds = %b21
%v24 = load i32, i32* undef, align 4
%v25 = shl i32 %v24, 1
%v26 = and i32 %v25, 65534
%v27 = or i32 %v26, 0
store i32 %v27, i32* undef, align 4
ret void
}
declare i32 @llvm.hexagon.A2.sath(i32) #1
attributes #0 = { nounwind "target-cpu"="hexagonv5" "target-features"="-hvx,-long-calls" }
attributes #1 = { nounwind readnone }