36 lines
1.5 KiB
Diff
36 lines
1.5 KiB
Diff
This backport contains 1 patch from gcc main stream tree.
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The commit id of these patchs list as following in the order of time.
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0001-Fix-ICE-when-__builtin_calloc-has-no-LHS-PR-tree-opt.patch
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4c4be718fb65f9b8dd06d83c6fa3f697a5369d52
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diff -Nurp a/gcc/testsuite/gcc.target/s390/pr91014.c b/gcc/testsuite/gcc.target/s390/pr91014.c
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--- a/gcc/testsuite/gcc.target/s390/pr91014.c 1970-01-01 08:00:00.000000000 +0800
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+++ b/gcc/testsuite/gcc.target/s390/pr91014.c 2020-09-09 15:47:34.740000000 +0800
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@@ -0,0 +1,8 @@
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+/* { dg-do compile } */
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+/* { dg-options "-O" } */
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+/* { dg-require-effective-target alloca } */
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+
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+void foo(void)
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+{
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+ __builtin_calloc (1, 1); /* { dg-warning "ignoring return value of '__builtin_calloc' declared with attribute 'warn_unused_result'" } */
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+}
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diff -Nurp a/gcc/tree-ssa-dse.c b/gcc/tree-ssa-dse.c
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--- a/gcc/tree-ssa-dse.c 2020-09-09 15:47:21.084000000 +0800
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+++ b/gcc/tree-ssa-dse.c 2020-09-09 15:47:34.740000000 +0800
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@@ -119,10 +119,11 @@ initialize_ao_ref_for_dse (gimple *stmt,
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{
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tree nelem = gimple_call_arg (stmt, 0);
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tree selem = gimple_call_arg (stmt, 1);
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+ tree lhs;
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if (TREE_CODE (nelem) == INTEGER_CST
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- && TREE_CODE (selem) == INTEGER_CST)
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+ && TREE_CODE (selem) == INTEGER_CST
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+ && (lhs = gimple_call_lhs (stmt)) != NULL_TREE)
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{
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- tree lhs = gimple_call_lhs (stmt);
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tree size = fold_build2 (MULT_EXPR, TREE_TYPE (nelem),
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nelem, selem);
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ao_ref_init_from_ptr_and_size (write, lhs, size);
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