From 701ce0cadbd5eb0655ab0c33de5c8a337a498a34 Mon Sep 17 00:00:00 2001 From: Luc Van Oostenryck Date: Mon, 6 Jan 2020 01:01:18 +0100 Subject: memops: kill dead loads before phi-node conversion During load simplification it may happen that a load is unused but if this fact is ignored and the usual conversion to a phi-node is made, then this value may seem to be needed and can't anymore be simplified away. Fix this by removing dead loads during load simplification. Signed-off-by: Luc Van Oostenryck --- validation/memops/kill-dead-loads00.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 validation/memops/kill-dead-loads00.c (limited to 'validation') diff --git a/validation/memops/kill-dead-loads00.c b/validation/memops/kill-dead-loads00.c new file mode 100644 index 00000000..df7ec037 --- /dev/null +++ b/validation/memops/kill-dead-loads00.c @@ -0,0 +1,22 @@ +void fun(void); + +void foo(int *p) +{ + for (*p; *p; *p) { +l: + fun(); + } + + if (0) + goto l; +} + +/* + * check-name: kill-dead-loads00 + * check-command: test-linearize -Wno-decl $file + * + * check-output-ignore + * check-output-excludes: phi\\. + * check-output-pattern(1): load\\. + * check-output-end + */ -- cgit 1.2.3-korg