derek.holloway
7502bf64a4
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135 lines
5.8 KiB
LLVM
135 lines
5.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes=instcombine -S | FileCheck %s
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; RUN: opt < %s -passes=instcombine -S -debugify-each | FileCheck %s
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declare void @llvm.experimental.guard(i1, ...)
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define void @test_guard_adjacent_same_cond(i1 %A) {
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; CHECK-LABEL: @test_guard_adjacent_same_cond(
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; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[A:%.*]]) [ "deopt"() ]
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; CHECK-NEXT: ret void
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;
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call void(i1, ...) @llvm.experimental.guard( i1 %A )[ "deopt"() ]
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call void(i1, ...) @llvm.experimental.guard( i1 %A )[ "deopt"() ]
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call void(i1, ...) @llvm.experimental.guard( i1 %A )[ "deopt"() ]
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call void(i1, ...) @llvm.experimental.guard( i1 %A )[ "deopt"() ]
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call void(i1, ...) @llvm.experimental.guard( i1 %A )[ "deopt"() ]
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call void(i1, ...) @llvm.experimental.guard( i1 %A )[ "deopt"() ]
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call void(i1, ...) @llvm.experimental.guard( i1 %A )[ "deopt"() ]
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call void(i1, ...) @llvm.experimental.guard( i1 %A )[ "deopt"() ]
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call void(i1, ...) @llvm.experimental.guard( i1 %A )[ "deopt"() ]
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call void(i1, ...) @llvm.experimental.guard( i1 %A )[ "deopt"() ]
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ret void
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}
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define void @test_guard_adjacent_diff_cond(i1 %A, i1 %B, i1 %C) {
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; CHECK-LABEL: @test_guard_adjacent_diff_cond(
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; CHECK-NEXT: [[TMP1:%.*]] = and i1 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: [[TMP2:%.*]] = and i1 [[TMP1]], [[C:%.*]]
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; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[TMP2]], i32 123) [ "deopt"() ]
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; CHECK-NEXT: ret void
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;
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call void(i1, ...) @llvm.experimental.guard( i1 %A, i32 123 )[ "deopt"() ]
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call void(i1, ...) @llvm.experimental.guard( i1 %B, i32 456 )[ "deopt"() ]
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call void(i1, ...) @llvm.experimental.guard( i1 %C, i32 789 )[ "deopt"() ]
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ret void
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}
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; This version tests for the common form where the conditions are
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; between the guards
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define void @test_guard_adjacent_diff_cond2(i32 %V1, i32 %V2) {
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; CHECK-LABEL: @test_guard_adjacent_diff_cond2(
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; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[V1:%.*]], [[V2:%.*]]
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; CHECK-NEXT: [[TMP2:%.*]] = icmp slt i32 [[TMP1]], 0
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; CHECK-NEXT: [[AND:%.*]] = and i32 [[V1]], 255
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; CHECK-NEXT: [[C:%.*]] = icmp samesign ult i32 [[AND]], 129
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; CHECK-NEXT: [[TMP3:%.*]] = and i1 [[TMP2]], [[C]]
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; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[TMP3]], i32 123) [ "deopt"() ]
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; CHECK-NEXT: ret void
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;
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%A = icmp slt i32 %V1, 0
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call void(i1, ...) @llvm.experimental.guard( i1 %A, i32 123 )[ "deopt"() ]
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%B = icmp slt i32 %V2, 0
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call void(i1, ...) @llvm.experimental.guard( i1 %B, i32 456 )[ "deopt"() ]
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%and = and i32 %V1, 255
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%C = icmp sle i32 %and, 128
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call void(i1, ...) @llvm.experimental.guard( i1 %C, i32 789 )[ "deopt"() ]
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ret void
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}
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; Might not be legal to hoist the load above the first guard since the
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; guard might control dereferenceability
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define void @negative_load(i32 %V1, ptr %P) {
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; CHECK-LABEL: @negative_load(
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; CHECK-NEXT: [[A:%.*]] = icmp slt i32 [[V1:%.*]], 0
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; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[A]], i32 123) [ "deopt"() ]
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; CHECK-NEXT: [[V2:%.*]] = load i32, ptr [[P:%.*]], align 4
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; CHECK-NEXT: [[B:%.*]] = icmp slt i32 [[V2]], 0
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; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[B]], i32 456) [ "deopt"() ]
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; CHECK-NEXT: ret void
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;
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%A = icmp slt i32 %V1, 0
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call void(i1, ...) @llvm.experimental.guard( i1 %A, i32 123 )[ "deopt"() ]
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%V2 = load i32, ptr %P
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%B = icmp slt i32 %V2, 0
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call void(i1, ...) @llvm.experimental.guard( i1 %B, i32 456 )[ "deopt"() ]
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ret void
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}
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define void @deref_load(i32 %V1, ptr dereferenceable(4) align 4 %P) nofree nosync {
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; CHECK-LABEL: @deref_load(
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; CHECK-NEXT: [[V2:%.*]] = load i32, ptr [[P:%.*]], align 4
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; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[V1:%.*]], [[V2]]
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; CHECK-NEXT: [[TMP2:%.*]] = icmp slt i32 [[TMP1]], 0
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; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[TMP2]], i32 123) [ "deopt"() ]
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; CHECK-NEXT: ret void
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;
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%A = icmp slt i32 %V1, 0
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call void(i1, ...) @llvm.experimental.guard( i1 %A, i32 123 )[ "deopt"() ]
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%V2 = load i32, ptr %P
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%B = icmp slt i32 %V2, 0
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call void(i1, ...) @llvm.experimental.guard( i1 %B, i32 456 )[ "deopt"() ]
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ret void
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}
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; The divide might fault above the guard
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define void @negative_div(i32 %V1, i32 %D) {
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; CHECK-LABEL: @negative_div(
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; CHECK-NEXT: [[A:%.*]] = icmp slt i32 [[V1:%.*]], 0
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; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[A]], i32 123) [ "deopt"() ]
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; CHECK-NEXT: [[V2:%.*]] = udiv i32 [[V1]], [[D:%.*]]
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; CHECK-NEXT: [[B:%.*]] = icmp slt i32 [[V2]], 0
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; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[B]], i32 456) [ "deopt"() ]
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; CHECK-NEXT: ret void
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;
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%A = icmp slt i32 %V1, 0
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call void(i1, ...) @llvm.experimental.guard( i1 %A, i32 123 )[ "deopt"() ]
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%V2 = udiv i32 %V1, %D
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%B = icmp slt i32 %V2, 0
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call void(i1, ...) @llvm.experimental.guard( i1 %B, i32 456 )[ "deopt"() ]
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ret void
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}
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; Highlight the limit of the window in a case which would otherwise be mergable
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define void @negative_window(i32 %V1, i32 %a, i32 %b, i32 %c, i32 %d) {
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; CHECK-LABEL: @negative_window(
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; CHECK-NEXT: [[CMP1:%.*]] = icmp slt i32 [[V1:%.*]], 0
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; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[CMP1]], i32 123) [ "deopt"() ]
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; CHECK-NEXT: [[V2:%.*]] = add i32 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: [[V3:%.*]] = add i32 [[V2]], [[C:%.*]]
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; CHECK-NEXT: [[V4:%.*]] = add i32 [[V3]], [[D:%.*]]
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; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[V4]], 0
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; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[CMP2]], i32 456) [ "deopt"() ]
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; CHECK-NEXT: ret void
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;
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%cmp1 = icmp slt i32 %V1, 0
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call void(i1, ...) @llvm.experimental.guard( i1 %cmp1, i32 123 )[ "deopt"() ]
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%V2 = add i32 %a, %b
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%V3 = add i32 %V2, %c
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%V4 = add i32 %V3, %d
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%cmp2 = icmp slt i32 %V4, 0
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call void(i1, ...) @llvm.experimental.guard( i1 %cmp2, i32 456 )[ "deopt"() ]
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ret void
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}
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