104 lines
3.4 KiB
LLVM
104 lines
3.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -passes=indvars < %s | FileCheck %s
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; This tests the case where a terminator can be modeled by SCEV,
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; because it has a returned attribute.
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target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
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declare i32 @foo(i32)
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define void @test(i8* %p) personality i8* undef {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ], [ 0, [[ENTRY:%.*]] ]
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; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH]] ]
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; CHECK-NEXT: [[RES:%.*]] = invoke i32 @foo(i32 returned [[IV]])
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; CHECK-NEXT: to label [[LOOP_LATCH]] unwind label [[EXIT:%.*]]
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; CHECK: loop.latch:
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; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add i64 [[INDVARS_IV]], 1
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; CHECK-NEXT: [[IV_NEXT]] = add nuw i32 [[IV]], 1
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; CHECK-NEXT: [[TMP0:%.*]] = trunc i64 [[INDVARS_IV]] to i32
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; CHECK-NEXT: [[TMP1:%.*]] = call i32 @foo(i32 [[TMP0]])
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; CHECK-NEXT: br label [[LOOP]]
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; CHECK: exit:
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; CHECK-NEXT: [[LP:%.*]] = landingpad { i8*, i32 }
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; CHECK-NEXT: cleanup
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; CHECK-NEXT: ret void
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;
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entry:
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br label %loop
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loop:
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%iv = phi i32 [ 0, %entry ], [ %iv.next, %loop.latch ]
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%res = invoke i32 @foo(i32 returned %iv)
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to label %loop.latch unwind label %exit
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loop.latch:
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%ext = zext i32 %iv to i64
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%tmp5 = getelementptr inbounds i8, i8* %p, i64 %ext
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%iv.next = add nuw i32 %iv, 1
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call i32 @foo(i32 %res)
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br label %loop
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exit:
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%lp = landingpad { i8*, i32 }
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cleanup
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ret void
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}
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define void @test_critedge(i1 %c, i8* %p) personality i8* undef {
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; CHECK-LABEL: @test_critedge(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ], [ 0, [[ENTRY:%.*]] ]
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; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH]] ]
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; CHECK-NEXT: br i1 [[C:%.*]], label [[LOOP_INVOKE:%.*]], label [[LOOP_OTHER:%.*]]
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; CHECK: loop.invoke:
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; CHECK-NEXT: [[TMP0:%.*]] = trunc i64 [[INDVARS_IV]] to i32
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; CHECK-NEXT: [[RES:%.*]] = invoke i32 @foo(i32 returned [[IV]])
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; CHECK-NEXT: to label [[LOOP_LATCH]] unwind label [[EXIT:%.*]]
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; CHECK: loop.other:
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; CHECK-NEXT: br label [[LOOP_LATCH]]
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; CHECK: loop.latch:
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; CHECK-NEXT: [[PHI:%.*]] = phi i32 [ [[TMP0]], [[LOOP_INVOKE]] ], [ 0, [[LOOP_OTHER]] ]
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; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add i64 [[INDVARS_IV]], 1
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; CHECK-NEXT: [[IV_NEXT]] = add nuw i32 [[IV]], 1
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; CHECK-NEXT: [[TMP1:%.*]] = call i32 @foo(i32 [[PHI]])
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; CHECK-NEXT: br label [[LOOP]]
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; CHECK: exit:
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; CHECK-NEXT: [[LP:%.*]] = landingpad { i8*, i32 }
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; CHECK-NEXT: cleanup
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; CHECK-NEXT: ret void
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;
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entry:
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br label %loop
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loop:
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%iv = phi i32 [ 0, %entry ], [ %iv.next, %loop.latch ]
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br i1 %c, label %loop.invoke, label %loop.other
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loop.invoke:
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%res = invoke i32 @foo(i32 returned %iv)
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to label %loop.latch unwind label %exit
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loop.other:
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br label %loop.latch
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loop.latch:
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%phi = phi i32 [ %res, %loop.invoke ], [ 0, %loop.other ]
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%ext = zext i32 %iv to i64
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%tmp5 = getelementptr inbounds i8, i8* %p, i64 %ext
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%iv.next = add nuw i32 %iv, 1
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call i32 @foo(i32 %phi)
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br label %loop
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exit:
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%lp = landingpad { i8*, i32 }
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cleanup
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ret void
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}
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