2e55bc9f3c
Add a compiler option and the instructions required to set the special Data Stream Control Register (DSCR). The special register will not be set by default. Original patch by: Muhammad Usman Reviewed By: nemanjai, #powerpc Differential Revision: https://reviews.llvm.org/D117013
24 lines
788 B
LLVM
24 lines
788 B
LLVM
; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc-unknown-linux-gnu -mcpu=pwr9 \
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; RUN: | FileCheck %s -check-prefix=DEFAULT
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; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc-unknown-linux-gnu -mcpu=pwr9 \
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; RUN: -ppc-set-dscr=0xFFFFFFFFFFFFFFFF | FileCheck %s -check-prefix=UPPER
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; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc-unknown-linux-gnu -mcpu=pwr9 \
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; RUN: -ppc-set-dscr=0x01C4 | FileCheck %s -check-prefix=LOWER
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define i32 @main() {
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; CHECK: # %bb.0:
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; DEFAULT-NOT: mtudscr
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; UPPER: lis [[inReg:[0-9]+]], 511
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; UPPER-NEXT: ori [[inReg]], [[inReg]], 65535
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; UPPER-NEXT: mtudscr [[inReg]]
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; LOWER: lis [[inReg:[0-9]+]], 0
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; LOWER-NEXT: ori [[inReg]], [[inReg]], 452
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; LOWER-NEXT: mtudscr [[inReg]]
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ret i32 1
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}
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