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[DAGCombiner] Precommit Sext Tests for D91589
Patch by: @laytonio (Layton Kifer) Differential Revision: https://reviews.llvm.org/D91671
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py | ||
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s | ||
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;; TODO: fold (sext (not x)) -> (add (zext x) -1) | ||
define i32 @sext_of_not(i1 %x) { | ||
; CHECK-LABEL: sext_of_not: | ||
; CHECK: # %bb.0: | ||
; CHECK-NEXT: xilf %r2, 4294967295 | ||
; CHECK-NEXT: nilf %r2, 1 | ||
; CHECK-NEXT: lcr %r2, %r2 | ||
; CHECK-NEXT: br %r14 | ||
%xor = xor i1 %x, 1 | ||
%sext = sext i1 %xor to i32 | ||
ret i32 %sext | ||
} | ||
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;; TODO: fold (sext (not (setcc a, b, cc))) -> (sext (setcc a, b, !cc)) | ||
define i32 @sext_of_not_cmp(i32 %x) { | ||
; CHECK-LABEL: sext_of_not_cmp: | ||
; CHECK: # %bb.0: | ||
; CHECK-NEXT: chi %r2, 7 | ||
; CHECK-NEXT: ipm %r2 | ||
; CHECK-NEXT: afi %r2, 1879048192 | ||
; CHECK-NEXT: sra %r2, 31 | ||
; CHECK-NEXT: br %r14 | ||
%cmp = icmp eq i32 %x, 7 | ||
%xor = xor i1 %cmp, 1 | ||
%sext = sext i1 %xor to i32 | ||
ret i32 %sext | ||
} | ||
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;; TODO: fold (add (zext (setcc a, b, cc)), -1) -> (sext (setcc a, b, !cc)) | ||
define i32 @dec_of_zexted_cmp(i32 %x) { | ||
; CHECK-LABEL: dec_of_zexted_cmp: | ||
; CHECK: # %bb.0: | ||
; CHECK-NEXT: chi %r2, 7 | ||
; CHECK-NEXT: ipm %r2 | ||
; CHECK-NEXT: afi %r2, -268435456 | ||
; CHECK-NEXT: srl %r2, 31 | ||
; CHECK-NEXT: ahi %r2, -1 | ||
; CHECK-NEXT: br %r14 | ||
%cmp = icmp eq i32 %x, 7 | ||
%zext = zext i1 %cmp to i32 | ||
%dec = sub i32 %zext, 1 | ||
ret i32 %dec | ||
} |