123 lines
3.5 KiB
LLVM
123 lines
3.5 KiB
LLVM
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; Extract the 'if', 'then', and 'else' blocks into the same function.
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; RUN: echo 'foo if;then;else' > %t
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; Make sure we can still extract a single basic block
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; RUN: echo 'foo end' >> %t
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; RUN: echo 'bar bb14;bb20' >> %t
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; RUN: opt -S -extract-blocks -extract-blocks-file=%t %s | FileCheck %s
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; CHECK-LABEL: foo
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;
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; CHECK: if:
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; The diamond will produce an i32 value, make sure we account for that.
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; CHECK: [[RES_VAL_ADDR:%[^ ]*]] = alloca i32
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; CHECK-NEXT: br label %[[FOO_DIAMOND_LABEL:.*$]]
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;
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; The if-then-else blocks should be in just one function.
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; CHECK: [[FOO_DIAMOND_LABEL]]:
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; CHECK: call void [[FOO_DIAMOND:@[^(]*]](i32 %arg1, i32 %arg, i32* [[RES_VAL_ADDR]])
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; CHECK-NEXT: [[RES_VAL:%[^ ]*]] = load i32, i32* [[RES_VAL_ADDR]]
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; Then it should directly jump to end.
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; CHECK: br label %[[FOO_END_LABEL:.*$]]
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;
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; End should have been extracted into its own function.
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; CHECK: [[FOO_END_LABEL]]:
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; CHECK: [[CMP:%[^ ]*]] = call i1 [[FOO_END:@[^(]*]](i32 [[RES_VAL]], i32 %arg)
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; CHECK-NEXT: br i1 [[CMP]], label %ret0, label %ret1
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define i32 @foo(i32 %arg, i32 %arg1) {
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if:
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%tmp5 = icmp sgt i32 %arg, 0
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%tmp8 = icmp sgt i32 %arg1, 0
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%or.cond = and i1 %tmp5, %tmp8
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br i1 %or.cond, label %then, label %else
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then:
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%tmp12 = shl i32 %arg1, 2
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%tmp13 = add nsw i32 %tmp12, %arg
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br label %end
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else:
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%tmp22 = mul nsw i32 %arg, 3
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%tmp24 = sdiv i32 %arg1, 6
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%tmp25 = add nsw i32 %tmp24, %tmp22
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br label %end
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end:
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%tmp.0 = phi i32 [ %tmp13, %then ], [ %tmp25, %else ]
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%and0 = and i32 %tmp.0, %arg
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%cmp1 = icmp slt i32 %and0, 0
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br i1 %cmp1, label %ret0, label %ret1
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ret0:
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ret i32 0
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ret1:
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ret i32 1
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}
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; CHECK-LABEL: bar
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;
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; Check that we extracted bb14 and bb20 in their own (shared) function.
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; CHECK: bb
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; CHECK: br i1 %or.cond, label %bb9, label %[[BAR_DIAMOND_LABEL:.*$]]
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;
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; CHECK: [[BAR_DIAMOND_LABEL]]:
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; CHECK: [[CMP:%[^ ]*]] = call i1 [[BAR_DIAMOND:@[^(]*]](i32 %arg1, i32 %arg, i32*
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; CHECK: br i1 [[CMP]], label %bb26, label %bb30
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define i32 @bar(i32 %arg, i32 %arg1) {
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bb:
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%tmp5 = icmp sgt i32 %arg, 0
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%tmp8 = icmp sgt i32 %arg1, 0
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%or.cond = and i1 %tmp5, %tmp8
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br i1 %or.cond, label %bb9, label %bb14
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bb9: ; preds = %bb
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%tmp12 = shl i32 %arg1, 2
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%tmp13 = add nsw i32 %tmp12, %arg
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br label %bb30
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bb14: ; preds = %bb
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%0 = and i32 %arg1, %arg
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%1 = icmp slt i32 %0, 0
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br i1 %1, label %bb20, label %bb26
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bb20: ; preds = %bb14
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%tmp22 = mul nsw i32 %arg, 3
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%tmp24 = sdiv i32 %arg1, 6
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%tmp25 = add nsw i32 %tmp24, %tmp22
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br label %bb30
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bb26: ; preds = %bb14
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%tmp29 = sub nsw i32 %arg, %arg1
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br label %bb30
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bb30: ; preds = %bb26, %bb20, %bb9
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%tmp.0 = phi i32 [ %tmp13, %bb9 ], [ %tmp25, %bb20 ], [ %tmp29, %bb26 ]
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ret i32 %tmp.0
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}
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; Check that we extracted the three asked basic blocks.
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; CHECK: [[FOO_DIAMOND]]
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; CHECK: then:
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; Make sure the function doesn't end in the middle of the
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; list of the blocks we are checking.
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; CHECK-NOT: }
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; CHECK: else:
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; CHECK-NOT: }
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; The name of the if block is weird because it had to be split
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; since it was the name of the entry of the original function.
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; CHECK: if.split:
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; CHECK: }
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; CHECK: [[FOO_END]]
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; CHECK-NOT: }
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; CHECK: end:
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; CHECK: }
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; Check that we extracted the two asked basic blocks.
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; CHECK: [[BAR_DIAMOND]]
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; CHECK-NOT: }
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; CHECK: bb14:
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; CHECK-NOT: }
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; CHECK: bb20:
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; CHECK: }
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