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[GlobalOpt] add tests for constant expressions that can trap; NFC
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py | ||
; RUN: opt -passes=globalopt < %s -S | FileCheck %s | ||
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@i = internal unnamed_addr global i32 1, align 4 | ||
@r = internal global i64 0, align 8 | ||
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declare dso_local void @use(i32) | ||
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define i32 @cantrap_constant() { | ||
; CHECK-LABEL: @cantrap_constant( | ||
; CHECK-NEXT: entry: | ||
; CHECK-NEXT: [[DOTB:%.*]] = load i1, i1* @i, align 1 | ||
; CHECK-NEXT: [[TMP0:%.*]] = select i1 [[DOTB]], i32 trunc (i64 urem (i64 7, i64 zext (i1 icmp eq (i64* inttoptr (i64 1 to i64*), i64* @r) to i64)) to i32), i32 1 | ||
; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[TMP0]], 0 | ||
; CHECK-NEXT: [[NOT_TOBOOL:%.*]] = xor i1 [[TOBOOL]], true | ||
; CHECK-NEXT: [[SPEC_SELECT:%.*]] = zext i1 [[NOT_TOBOOL]] to i32 | ||
; CHECK-NEXT: tail call void @use(i32 [[SPEC_SELECT]]) | ||
; CHECK-NEXT: br i1 [[TOBOOL]], label [[IF_THEN:%.*]], label [[EXIT:%.*]] | ||
; CHECK: if.then: | ||
; CHECK-NEXT: store i1 true, i1* @i, align 1 | ||
; CHECK-NEXT: br label [[EXIT]] | ||
; CHECK: exit: | ||
; CHECK-NEXT: ret i32 0 | ||
; | ||
entry: | ||
%0 = load i32, i32* @i, align 4 | ||
%tobool = icmp eq i32 %0, 0 | ||
%not.tobool = xor i1 %tobool, true | ||
%spec.select = zext i1 %not.tobool to i32 | ||
tail call void @use(i32 %spec.select) | ||
br i1 %tobool, label %if.then, label %exit | ||
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if.then: | ||
store i32 trunc (i64 urem (i64 7, i64 zext (i1 icmp eq (i64* inttoptr (i64 1 to i64*), i64* @r) to i64)) to i32), i32* @i, align 4 | ||
br label %exit | ||
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exit: | ||
ret i32 0 | ||
} | ||
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@b1 = internal global i64* null, align 8 | ||
@d1 = internal unnamed_addr global i32 0, align 2 | ||
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define void @maytrap() { | ||
; CHECK-LABEL: @maytrap( | ||
; CHECK-NEXT: store i1 true, i1* @d1, align 1 | ||
; CHECK-NEXT: ret void | ||
; | ||
store i32 srem (i32 7, i32 zext (i1 icmp eq (i64** inttoptr (i64 16 to i64**), i64** @b1) to i32)), i32* @d1, align 2 | ||
ret void | ||
} | ||
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define i32 @main1() { | ||
; CHECK-LABEL: @main1( | ||
; CHECK-NEXT: [[T0_B:%.*]] = load i1, i1* @d1, align 1 | ||
; CHECK-NEXT: [[T0:%.*]] = select i1 [[T0_B]], i32 srem (i32 7, i32 zext (i1 icmp eq (i64** inttoptr (i64 16 to i64**), i64** @b1) to i32)), i32 0 | ||
; CHECK-NEXT: ret i32 [[T0]] | ||
; | ||
%t0 = load i32, i32* @d1, align 2 | ||
ret i32 %t0 | ||
} | ||
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@b2 = internal global i64* null, align 8 | ||
@d2 = internal unnamed_addr global i32 0, align 2 | ||
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define void @maynottrap() { | ||
; CHECK-LABEL: @maynottrap( | ||
; CHECK-NEXT: store i1 true, i1* @d2, align 1 | ||
; CHECK-NEXT: ret void | ||
; | ||
store i32 mul (i32 7, i32 zext (i1 icmp eq (i64** inttoptr (i64 16 to i64**), i64** @b2) to i32)), i32* @d2, align 2 | ||
ret void | ||
} | ||
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define i32 @main2() { | ||
; CHECK-LABEL: @main2( | ||
; CHECK-NEXT: [[T0_B:%.*]] = load i1, i1* @d2, align 1 | ||
; CHECK-NEXT: [[T0:%.*]] = select i1 [[T0_B]], i32 mul (i32 zext (i1 icmp eq (i64** inttoptr (i64 16 to i64**), i64** @b2) to i32), i32 7), i32 0 | ||
; CHECK-NEXT: ret i32 [[T0]] | ||
; | ||
%t0 = load i32, i32* @d2, align 2 | ||
ret i32 %t0 | ||
} |