derek.holloway
7502bf64a4
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62 lines
2.7 KiB
LLVM
62 lines
2.7 KiB
LLVM
; Tests that InstrEmitter::EmitMachineNode correctly sets predecessors and
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; successors.
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; RUN: llc -stop-after=finalize-isel -print-after=finalize-isel -mtriple=i686-- < %s 2>&1 | FileCheck %s
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; The block containting the INLINEASM_BR should have a fallthrough and its
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; indirect targets as its successors. Fallthrough should have 100% branch weight,
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; while the indirect targets have 0%.
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; CHECK: bb.0 (%ir-block.2):
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; CHECK-NEXT: successors: %bb.1(0x80000000), %bb.4(0x00000000); %bb.1(100.00%), %bb.4(0.00%)
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; The fallthrough is a block containing a second INLINEASM_BR. Check it has two successors,
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; and the the probability for fallthrough is 100%.
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; CHECK: bb.1 (%ir-block.4):
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; CHECK-NEXT: predecessors: %bb.0
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; CHECK-NEXT: successors: %bb.3(0x80000000), %bb.2(0x00000000); %bb.3(100.00%), %bb.2(0.00%)
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; Check the second INLINEASM_BR target block is preceded by the block with the
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; second INLINEASM_BR.
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; CHECK: bb.2 (%ir-block.7, inlineasm-br-indirect-target):
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; CHECK-NEXT: predecessors: %bb.1
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; Check the first INLINEASM_BR target block is predecessed by the block with
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; the first INLINEASM_BR.
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; CHECK: bb.4 (%ir-block.12, inlineasm-br-indirect-target):
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; CHECK-NEXT: predecessors: %bb.0
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@.str = private unnamed_addr constant [26 x i8] c"inline asm#1 returned %d\0A\00", align 1
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@.str.2 = private unnamed_addr constant [26 x i8] c"inline asm#2 returned %d\0A\00", align 1
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@str = private unnamed_addr constant [30 x i8] c"inline asm#1 caused exception\00", align 1
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@str.4 = private unnamed_addr constant [30 x i8] c"inline asm#2 caused exception\00", align 1
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; Function Attrs: nounwind uwtable
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define dso_local i32 @main(i32 %0, ptr nocapture readnone %1) #0 {
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%3 = callbr i32 asm "jmp ${1:l}", "=r,!i,~{dirflag},~{fpsr},~{flags}"() #3
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to label %4 [label %11]
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4: ; preds = %2
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%5 = tail call i32 (ptr, ...) @printf(ptr nonnull dereferenceable(1) @.str, i32 %3)
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%6 = callbr i32 asm "jmp ${1:l}", "=r,!i,~{dirflag},~{fpsr},~{flags}"() #3
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to label %9 [label %7]
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7: ; preds = %4
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%8 = tail call i32 @puts(ptr nonnull dereferenceable(1) @str.4)
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br label %13
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9: ; preds = %4
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%10 = tail call i32 (ptr, ...) @printf(ptr nonnull dereferenceable(1) @.str.2, i32 %6)
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br label %13
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11: ; preds = %2
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%12 = tail call i32 @puts(ptr nonnull dereferenceable(1) @str)
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br label %13
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13: ; preds = %11, %9, %7
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%14 = phi i32 [ 1, %7 ], [ 0, %9 ], [ 1, %11 ]
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ret i32 %14
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}
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declare dso_local i32 @printf(ptr nocapture readonly, ...) local_unnamed_addr #1
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declare i32 @puts(ptr nocapture readonly) local_unnamed_addr #2
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