diff options
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/ARM/2011-10-18-DisableMovtSize.ll | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/2011-10-18-DisableMovtSize.ll b/test/CodeGen/ARM/2011-10-18-DisableMovtSize.ll new file mode 100644 index 0000000000..6dae75be91 --- /dev/null +++ b/test/CodeGen/ARM/2011-10-18-DisableMovtSize.ll @@ -0,0 +1,27 @@ +; RUN: llc < %s -mtriple=armv7-apple-darwin | FileCheck %s +; RUN: llc < %s -mtriple=armv7-unknown-linux-eabi | FileCheck %s + +; Check that when optimizing for size, a literal pool load is used +; instead of the (potentially faster) movw/movt pair when loading +; a large constant. + +@x = global i32* inttoptr (i32 305419888 to i32*), align 4 + +define i32 @f() optsize { + ; CHECK: f: + ; CHECK: ldr r{{.}}, {{.?}}LCPI{{.}}_{{.}} + ; CHECK: ldr r{{.}}, [{{(pc, )?}}r{{.}}] + ; CHECK: ldr r{{.}}, [r{{.}}] + %1 = load i32** @x, align 4 + %2 = load i32* %1 + ret i32 %2 +} + +define i32 @g() { + ; CHECK: g: + ; CHECK: movw + ; CHECK: movt + %1 = load i32** @x, align 4 + %2 = load i32* %1 + ret i32 %2 +} |