27 lines
721 B
LLVM
27 lines
721 B
LLVM
; RUN: llc -mtriple=thumbv7s %s -o - | FileCheck %s
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; RUN: llc -mtriple=armv7s %s -o - | FileCheck %s
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; CodeGen should be able to set and reset the MinSize subtarget-feature, and
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; make use of it in deciding whether to use MOVW/MOVT for global variables or a
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; lit-pool load (saving roughly 2 bytes of code).
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@var = global i32 0
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define i32 @small_global() minsize {
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; CHECK-LABEL: small_global:
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; CHECK: ldr r[[GLOBDEST:[0-9]+]], {{.?LCPI0_0}}
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; CHECK: ldr r0, [r[[GLOBDEST]]]
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%val = load i32, i32* @var
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ret i32 %val
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}
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define i32 @big_global() {
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; CHECK-LABEL: big_global:
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; CHECK: movw [[GLOBDEST:r[0-9]+]], :lower16:var
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; CHECK: movt [[GLOBDEST]], :upper16:var
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%val = load i32, i32* @var
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ret i32 %val
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}
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