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[Hexagon] Add fshl/fshr -> combine() tests identified in D75114 

Added tests showing that the fshl/fshr -> combine() is working the wrong way around
This commit is contained in:
Simon Pilgrim 2020-03-06 17:14:28 +00:00
parent 1c82dd39f9
commit f78b9a3398
1 changed files with 16 additions and 0 deletions
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16
llvm/test/CodeGen/Hexagon/funnel-shift.ll
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@ -256,6 +256,22 @@ b0:
ret i64 %v0
}
; CHECK-LABEL: f30:
; CHECK: r[[R00:[0-9]+]] = combine(r0.h,r1.l)
define i32 @f30(i32 %a0, i32 %a1) #1 {
b0:
%v0 = tail call i32 @llvm.fshl.i32(i32 %a0, i32 %a1, i32 16)
ret i32 %v0
}
; CHECK-LABEL: f31:
; CHECK: r[[R00:[0-9]+]] = combine(r0.h,r1.l)
define i32 @f31(i32 %a0, i32 %a1) #1 {
b0:
%v0 = tail call i32 @llvm.fshr.i32(i32 %a0, i32 %a1, i32 16)
ret i32 %v0
}
declare i32 @llvm.fshl.i32(i32, i32, i32) #0
declare i32 @llvm.fshr.i32(i32, i32, i32) #0
declare i64 @llvm.fshl.i64(i64, i64, i64) #0