derek.holloway
7502bf64a4
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41 lines
2.1 KiB
LLVM
41 lines
2.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes=instcombine -S < %s | FileCheck %s
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; This test checks a regression in the select operand folding combine, in which
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; Constant::getUniqueInteger would crash for a scalable-vector zeroinitializer.
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define <vscale x 1 x i32> @select_opt(<vscale x 1 x i32> %b, <vscale x 1 x i1> %m) {
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; CHECK-LABEL: @select_opt(
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; CHECK-NEXT: [[C:%.*]] = add nsw <vscale x 1 x i32> [[B:%.*]], splat (i32 2)
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; CHECK-NEXT: [[D:%.*]] = select <vscale x 1 x i1> [[M:%.*]], <vscale x 1 x i32> [[C]], <vscale x 1 x i32> [[B]]
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; CHECK-NEXT: ret <vscale x 1 x i32> [[D]]
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;
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%c = add nsw <vscale x 1 x i32> %b, splat (i32 2)
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%d = select <vscale x 1 x i1> %m, <vscale x 1 x i32> %c, <vscale x 1 x i32> %b
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ret <vscale x 1 x i32> %d
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}
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define <vscale x 2 x i64> @load_scalable_of_selected_ptrs(ptr %p0, ptr %p1, i64 %idx) {
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; CHECK-LABEL: @load_scalable_of_selected_ptrs(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[ARRAYIDX0:%.*]] = getelementptr inbounds [4 x i8], ptr [[P0:%.*]], i64 [[IDX:%.*]]
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; CHECK-NEXT: [[ARRAYIDX1:%.*]] = getelementptr inbounds [4 x i8], ptr [[P1:%.*]], i64 [[IDX]]
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; CHECK-NEXT: [[L0:%.*]] = load i32, ptr [[ARRAYIDX0]], align 4
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; CHECK-NEXT: [[L1:%.*]] = load i32, ptr [[ARRAYIDX1]], align 4
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; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[L0]], [[L1]]
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; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], ptr [[ARRAYIDX0]], ptr [[ARRAYIDX1]]
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; CHECK-NEXT: [[RET:%.*]] = load <vscale x 2 x i64>, ptr [[SEL]], align 16
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; CHECK-NEXT: ret <vscale x 2 x i64> [[RET]]
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;
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entry:
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; Test introduced in response to a TypeSize warning arising from isSafeToLoadUnconditionally via instcombine.
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; deref (p0[0] < p1[0] ? p0 : p1) as <vscale x 2 x i64>.
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%arrayidx0 = getelementptr inbounds i32, ptr %p0, i64 %idx
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%arrayidx1 = getelementptr inbounds i32, ptr %p1, i64 %idx
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%l0 = load i32, ptr %arrayidx0
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%l1 = load i32, ptr %arrayidx1
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%cmp = icmp slt i32 %l0, %l1
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%sel = select i1 %cmp, ptr %arrayidx0, ptr %arrayidx1
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%ret = load <vscale x 2 x i64>, ptr %sel
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ret <vscale x 2 x i64> %ret
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}
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