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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/gcc.dg/spill-1.c
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Diffstat (limited to 'gcc/testsuite/gcc.dg/spill-1.c')
-rw-r--r--gcc/testsuite/gcc.dg/spill-1.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/spill-1.c b/gcc/testsuite/gcc.dg/spill-1.c
new file mode 100644
index 000000000..b85942e87
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/spill-1.c
@@ -0,0 +1,15 @@
+/* This caused an ICE during register spilling when targeting thumb.
+ There are 8 registers available for arithmetic operations (r0-r7)
+ r7 is the frame pointer, and r0-r3 are used to pass arguments.
+ Combine was extending the lives of the arguments (in r0-r3) up until the
+ call to z. This leaves only 3 regs free which isn't enough to preform the
+ doubleword addition. */
+/* { dg-do compile } */
+/* { dg-options "-O2 -fno-omit-frame-pointer" } */
+void z(int);
+int foo(int a, int b, int c, int d, long long *q)
+{
+ *q=*q+1;
+ z (a+b+c+d);
+}
+