a266af7211
Now that integer min/max intrinsics have good support in both InstCombine and other passes, start canonicalizing SPF min/max to intrinsic min/max. Once this sticks, we can stop matching SPF min/max in various places, and can remove hacks we have for preventing infinite loops and breaking of SPF canonicalization. Differential Revision: https://reviews.llvm.org/D98152
19 lines
526 B
LLVM
19 lines
526 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -instcombine -S | FileCheck %s
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define i32 @foo(i32 %x, i32 %y) {
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; CHECK-LABEL: @foo(
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; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.umax.i32(i32 [[X:%.*]], i32 [[Y:%.*]])
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; CHECK-NEXT: [[TMP2:%.*]] = xor i32 [[TMP1]], -1
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; CHECK-NEXT: ret i32 [[TMP2]]
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;
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%1 = xor i32 %x, -1
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%2 = xor i32 %y, -1
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%3 = icmp ugt i32 %1, %2
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%4 = select i1 %3, i32 %2, i32 %1, !prof !1
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ret i32 %4
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}
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!1 = !{!"branch_weights", i32 1, i32 6}
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