| ; Tests that InstrEmitter::EmitMachineNode correctly sets predecessors and |
| ; successors. |
| |
| ; RUN: llc -stop-after=finalize-isel -print-after=finalize-isel -mtriple=i686-- < %s 2>&1 | FileCheck %s |
| |
| ; The block containting the INLINEASM_BR should have a fallthrough and its |
| ; indirect targets as its successors. Fallthrough should have 100% branch weight, |
| ; while the indirect targets have 0%. |
| ; CHECK: bb.0 (%ir-block.2): |
| ; CHECK-NEXT: successors: %bb.1(0x80000000), %bb.4(0x00000000); %bb.1(100.00%), %bb.4(0.00%) |
| |
| ; The fallthrough is a block containing a second INLINEASM_BR. Check it has two successors, |
| ; and the the probability for fallthrough is 100%. |
| ; CHECK: bb.1 (%ir-block.4): |
| ; CHECK-NEXT: predecessors: %bb.0 |
| ; CHECK-NEXT: successors: %bb.3(0x80000000), %bb.2(0x00000000); %bb.3(100.00%), %bb.2(0.00%) |
| |
| ; Check the second INLINEASM_BR target block is preceded by the block with the |
| ; second INLINEASM_BR. |
| ; CHECK: bb.2 (%ir-block.7, address-taken): |
| ; CHECK-NEXT: predecessors: %bb.1 |
| |
| ; Check the first INLINEASM_BR target block is predecessed by the block with |
| ; the first INLINEASM_BR. |
| ; CHECK: bb.4 (%ir-block.11, address-taken): |
| ; CHECK-NEXT: predecessors: %bb.0 |
| |
| @.str = private unnamed_addr constant [26 x i8] c"inline asm#1 returned %d\0A\00", align 1 |
| @.str.2 = private unnamed_addr constant [26 x i8] c"inline asm#2 returned %d\0A\00", align 1 |
| @str = private unnamed_addr constant [30 x i8] c"inline asm#1 caused exception\00", align 1 |
| @str.4 = private unnamed_addr constant [30 x i8] c"inline asm#2 caused exception\00", align 1 |
| |
| ; Function Attrs: nounwind uwtable |
| define dso_local i32 @main(i32 %0, i8** nocapture readnone %1) #0 { |
| %3 = callbr i32 asm "jmp ${1:l}", "=r,X,~{dirflag},~{fpsr},~{flags}"(i8* blockaddress(@main, %11)) #3 |
| to label %4 [label %11] |
| |
| 4: ; preds = %2 |
| %5 = tail call i32 (i8*, ...) @printf(i8* nonnull dereferenceable(1) getelementptr inbounds ([26 x i8], [26 x i8]* @.str, i64 0, i64 0), i32 %3) |
| %6 = callbr i32 asm "jmp ${1:l}", "=r,X,~{dirflag},~{fpsr},~{flags}"(i8* blockaddress(@main, %7)) #3 |
| to label %9 [label %7] |
| |
| 7: ; preds = %4 |
| %8 = tail call i32 @puts(i8* nonnull dereferenceable(1) getelementptr inbounds ([30 x i8], [30 x i8]* @str.4, i64 0, i64 0)) |
| br label %13 |
| |
| 9: ; preds = %4 |
| %10 = tail call i32 (i8*, ...) @printf(i8* nonnull dereferenceable(1) getelementptr inbounds ([26 x i8], [26 x i8]* @.str.2, i64 0, i64 0), i32 %6) |
| br label %13 |
| |
| 11: ; preds = %2 |
| %12 = tail call i32 @puts(i8* nonnull dereferenceable(1) getelementptr inbounds ([30 x i8], [30 x i8]* @str, i64 0, i64 0)) |
| br label %13 |
| |
| 13: ; preds = %11, %9, %7 |
| %14 = phi i32 [ 1, %7 ], [ 0, %9 ], [ 1, %11 ] |
| ret i32 %14 |
| } |
| |
| declare dso_local i32 @printf(i8* nocapture readonly, ...) local_unnamed_addr #1 |
| declare i32 @puts(i8* nocapture readonly) local_unnamed_addr #2 |
