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llvm-project/llvm/test/Other/loop-pass-printer.ll

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IR printing improvement for loop passes Summary: Loop-pass printing is somewhat deficient since it does not provide the context around the loop (e.g. preheader). This context information becomes pretty essential when analyzing transformations that move stuff out of the loop. Extending printLoop to cover preheader and exit blocks (if any). Reviewers: sanjoy, silvas, weimingz Reviewed By: sanjoy Subscribers: apilipenko, skatkov, llvm-commits Differential Revision: https://reviews.llvm.org/D40246 llvm-svn: 318878
2017-11-23 04:59:53 +08:00
; This test checks -print-after/before on loop passes
; Besides of the loop itself it should be dumping loop pre-header and exits.
;
; RUN: opt < %s 2>&1 -disable-output \
; RUN: -loop-deletion -print-before=loop-deletion \
; RUN: | FileCheck %s -check-prefix=DEL
; RUN: opt < %s 2>&1 -disable-output \
; RUN: -loop-unroll -print-after=loop-unroll -filter-print-funcs=bar \
; RUN: | FileCheck %s -check-prefix=BAR
IR printing improvement for loop passes - handle -print-module-scope Summary: Adding support for -print-module-scope similar to how it is being done for function passes. This option causes loop-pass printer to emit a whole-module IR instead of just a loop itself. Reviewers: sanjoy, silvas, weimingz Reviewed By: sanjoy Subscribers: apilipenko, skatkov, llvm-commits Differential Revision: https://reviews.llvm.org/D40247 llvm-svn: 319566
2017-12-02 02:33:58 +08:00
; RUN: opt < %s 2>&1 -disable-output \
; RUN: -loop-unroll -print-after=loop-unroll -filter-print-funcs=foo -print-module-scope \
; RUN: | FileCheck %s -check-prefix=FOO-MODULE
IR printing improvement for loop passes Summary: Loop-pass printing is somewhat deficient since it does not provide the context around the loop (e.g. preheader). This context information becomes pretty essential when analyzing transformations that move stuff out of the loop. Extending printLoop to cover preheader and exit blocks (if any). Reviewers: sanjoy, silvas, weimingz Reviewed By: sanjoy Subscribers: apilipenko, skatkov, llvm-commits Differential Revision: https://reviews.llvm.org/D40246 llvm-svn: 318878
2017-11-23 04:59:53 +08:00
; DEL: IR Dump Before
; DEL-SAME: dead loops
; DEL: ; Preheader:
; DEL-NEXT: %idx = alloca i32, align 4
; DEL: ; Loop:
; DEL-NEXT: loop:
; DEL: cont:
; DEL: ; Exit blocks
; DEL: done:
; DEL: IR Dump Before
; DEL-SAME: dead loops
; DEL: ; Preheader:
; DEL-NEXT: br label %loop
; DEL: ; Loop:
; DEL-NEXT: loop:
; DEL: ; Exit blocks
; DEL: end:
; BAR: IR Dump After
; BAR-SAME: Unroll
; BAR: ; Preheader:
; BAR-NEXT: br label %loop
; BAR: ; Loop:
; BAR-NEXT: loop:
; BAR: ; Exit blocks
; BAR: end:
IR printing improvement for loop passes - handle -print-module-scope Summary: Adding support for -print-module-scope similar to how it is being done for function passes. This option causes loop-pass printer to emit a whole-module IR instead of just a loop itself. Reviewers: sanjoy, silvas, weimingz Reviewed By: sanjoy Subscribers: apilipenko, skatkov, llvm-commits Differential Revision: https://reviews.llvm.org/D40247 llvm-svn: 319566
2017-12-02 02:33:58 +08:00
; BAR-NOT: IR Dump
IR printing improvement for loop passes Summary: Loop-pass printing is somewhat deficient since it does not provide the context around the loop (e.g. preheader). This context information becomes pretty essential when analyzing transformations that move stuff out of the loop. Extending printLoop to cover preheader and exit blocks (if any). Reviewers: sanjoy, silvas, weimingz Reviewed By: sanjoy Subscribers: apilipenko, skatkov, llvm-commits Differential Revision: https://reviews.llvm.org/D40246 llvm-svn: 318878
2017-11-23 04:59:53 +08:00
; BAR-NOT: ; Loop
IR printing improvement for loop passes - handle -print-module-scope Summary: Adding support for -print-module-scope similar to how it is being done for function passes. This option causes loop-pass printer to emit a whole-module IR instead of just a loop itself. Reviewers: sanjoy, silvas, weimingz Reviewed By: sanjoy Subscribers: apilipenko, skatkov, llvm-commits Differential Revision: https://reviews.llvm.org/D40247 llvm-svn: 319566
2017-12-02 02:33:58 +08:00
; FOO-MODULE: IR Dump After
; FOO-MODULE-SAME: Unroll
; FOO-MODULE-SAME: loop: %loop
; FOO-MODULE-NEXT: ModuleID =
; FOO-MODULE: define void @foo
; FOO-MODULE: define void @bar
; FOO-MODULE-NOT: IR Dump
IR printing improvement for loop passes Summary: Loop-pass printing is somewhat deficient since it does not provide the context around the loop (e.g. preheader). This context information becomes pretty essential when analyzing transformations that move stuff out of the loop. Extending printLoop to cover preheader and exit blocks (if any). Reviewers: sanjoy, silvas, weimingz Reviewed By: sanjoy Subscribers: apilipenko, skatkov, llvm-commits Differential Revision: https://reviews.llvm.org/D40246 llvm-svn: 318878
2017-11-23 04:59:53 +08:00
define void @foo(){
%idx = alloca i32, align 4
store i32 0, i32* %idx, align 4
br label %loop
loop:
%1 = load i32, i32* %idx, align 4
%2 = icmp slt i32 %1, 10
br i1 %2, label %cont, label %done
cont:
%3 = load i32, i32* %idx, align 4
%4 = add nsw i32 %3, 1
store i32 %4, i32* %idx, align 4
br label %loop
done:
ret void
}
define void @bar(){
br label %loop
loop:
br i1 1, label %loop, label %end
end:
ret void
}