mcm-1.ll
1.28 KB
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; RUN: llc -verify-machineinstrs -mcpu=pwr7 -O0 -code-model=medium <%s | FileCheck %s
; RUN: llc -verify-machineinstrs -mcpu=pwr7 -O0 -code-model=large <%s | FileCheck %s
; Test correct code generation for medium and large code model
; for loading and storing an external variable.
target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f128:128:128-v128:128:128-n32:64"
target triple = "powerpc64-unknown-linux-gnu"
$fi = comdat any
@ei = external global i32
@fi = global i32 0, align 4, comdat($fi)
@gi = global i32 0, align 4, comdat($fi)
define signext i32 @test_external() nounwind {
entry:
%0 = load i32, i32* @ei, align 4
%inc = add nsw i32 %0, 1
store i32 %inc, i32* @ei, align 4
ret i32 %0
}
define i32 @load() {
entry:
%0 = load i32, i32* @gi, align 4
%1 = load i32, i32* @fi, align 4
%2 = add i32 %0, %1
ret i32 %2
}
; CHECK-LABEL: test_external:
; CHECK: addis [[REG1:[0-9]+]], 2, .LC[[TOCNUM:[0-9]+]]@toc@ha
; CHECK: ld [[REG2:[0-9]+]], .LC[[TOCNUM]]@toc@l([[REG1]])
; CHECK: lwz {{[0-9]+}}, 0([[REG2]])
; CHECK: stw {{[0-9]+}}, 0([[REG2]])
; CHECK: .section .toc,"aw",@progbits
; CHECK-NEXT: .LC0:
; CHECK-NEXT: .tc ei[TC],ei
; CHECK-NEXT: .LC1:
; CHECK-NEXT: .tc fi[TC],fi
; CHECK-NEXT: .LC2:
; CHECK-NEXT: .tc gi[TC],gi