1 ; Tests that InstrEmitter::EmitMachineNode correctly sets predecessors and
4 ; RUN: llc -stop-after=finalize-isel -print-after=finalize-isel -mtriple=i686-- < %s 2>&1 | FileCheck %s
6 ; The block containting the INLINEASM_BR should have a fallthrough and its
7 ; indirect targets as its successors. Fallthrough should have 100% branch weight,
8 ; while the indirect targets have 0%.
9 ; CHECK: bb.0 (%ir-block.2):
10 ; CHECK-NEXT: successors: %bb.1(0x80000000), %bb.4(0x00000000); %bb.1(100.00%), %bb.4(0.00%)
12 ; The fallthrough is a block containing a second INLINEASM_BR. Check it has two successors,
13 ; and the the probability for fallthrough is 100%.
14 ; CHECK: bb.1 (%ir-block.4):
15 ; CHECK-NEXT: predecessors: %bb.0
16 ; CHECK-NEXT: successors: %bb.3(0x80000000), %bb.2(0x00000000); %bb.3(100.00%), %bb.2(0.00%)
18 ; Check the second INLINEASM_BR target block is preceded by the block with the
19 ; second INLINEASM_BR.
20 ; CHECK: bb.2 (%ir-block.7, machine-block-address-taken, inlineasm-br-indirect-target):
21 ; CHECK-NEXT: predecessors: %bb.1
23 ; Check the first INLINEASM_BR target block is predecessed by the block with
24 ; the first INLINEASM_BR.
25 ; CHECK: bb.4 (%ir-block.12, machine-block-address-taken, inlineasm-br-indirect-target):
26 ; CHECK-NEXT: predecessors: %bb.0
28 @.str = private unnamed_addr constant [26 x i8] c"inline asm#1 returned %d\0A\00", align 1
29 @.str.2 = private unnamed_addr constant [26 x i8] c"inline asm#2 returned %d\0A\00", align 1
30 @str = private unnamed_addr constant [30 x i8] c"inline asm#1 caused exception\00", align 1
31 @str.4 = private unnamed_addr constant [30 x i8] c"inline asm#2 caused exception\00", align 1
33 ; Function Attrs: nounwind uwtable
34 define dso_local i32 @main(i32 %0, ptr nocapture readnone %1) #0 {
35 %3 = callbr i32 asm "jmp ${1:l}", "=r,!i,~{dirflag},~{fpsr},~{flags}"() #3
36 to label %4 [label %11]
39 %5 = tail call i32 (ptr, ...) @printf(ptr nonnull dereferenceable(1) @.str, i32 %3)
40 %6 = callbr i32 asm "jmp ${1:l}", "=r,!i,~{dirflag},~{fpsr},~{flags}"() #3
41 to label %9 [label %7]
44 %8 = tail call i32 @puts(ptr nonnull dereferenceable(1) @str.4)
48 %10 = tail call i32 (ptr, ...) @printf(ptr nonnull dereferenceable(1) @.str.2, i32 %6)
52 %12 = tail call i32 @puts(ptr nonnull dereferenceable(1) @str)
55 13: ; preds = %11, %9, %7
56 %14 = phi i32 [ 1, %7 ], [ 0, %9 ], [ 1, %11 ]
60 declare dso_local i32 @printf(ptr nocapture readonly, ...) local_unnamed_addr #1
61 declare i32 @puts(ptr nocapture readonly) local_unnamed_addr #2