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For historic reasons, the behavior of .align differs between targets. Fortunately, there are alternatives, .p2align and .balign, which make the interpretation of the parameter explicit, and which behave consistently across targets. This patch teaches MC to use .p2align instead of .align, so that people reading code for multiple architectures don't have to remember which way each platform does its .align directive. Differential Revision: http://reviews.llvm.org/D16549 llvm-svn: 258750
70 lines
2.2 KiB
LLVM
70 lines
2.2 KiB
LLVM
; RUN: llc -code-model=small < %s | FileCheck %s
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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-v128:128:128-n32:64"
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target triple = "powerpc64-unknown-linux-gnu"
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@double_array = global [32 x double] zeroinitializer, align 8
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@number64 = global i64 10, align 8
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@internal_static_var.x = internal unnamed_addr global i64 0, align 8
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define i64 @access_int64(i64 %a) nounwind readonly {
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entry:
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; CHECK-LABEL: access_int64:
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; CHECK-NEXT: .p2align 3
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; CHECK-NEXT: .quad .L[[BEGIN:.*]]
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; CHECK-NEXT: .quad .TOC.@tocbase
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; CHECK-NEXT: .quad 0
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; CHECK-NEXT: .text
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; CHECK-NEXT: .L[[BEGIN]]:
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%0 = load i64, i64* @number64, align 8
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; CHECK: ld {{[0-9]+}}, .LC{{[0-9]+}}@toc(2)
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%cmp = icmp eq i64 %0, %a
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%conv1 = zext i1 %cmp to i64
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ret i64 %conv1
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}
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define i64 @internal_static_var(i64 %a) nounwind {
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entry:
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; CHECK-LABEL: internal_static_var:
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; CHECK: ld {{[0-9]+}}, .LC{{[0-9]+}}@toc(2)
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%0 = load i64, i64* @internal_static_var.x, align 8
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%cmp = icmp eq i64 %0, %a
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%conv1 = zext i1 %cmp to i64
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ret i64 %conv1
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}
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define i32 @access_double(double %a) nounwind readnone {
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entry:
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; CHECK-LABEL: access_double:
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; CHECK: ld {{[0-9]+}}, .LC{{[0-9]+}}@toc(2)
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%cmp = fcmp oeq double %a, 2.000000e+00
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%conv = zext i1 %cmp to i32
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ret i32 %conv
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}
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define i32 @access_double_array(double %a, i32 %i) nounwind readonly {
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entry:
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; CHECK-LABEL: access_double_array:
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%idxprom = sext i32 %i to i64
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%arrayidx = getelementptr inbounds [32 x double], [32 x double]* @double_array, i64 0, i64 %idxprom
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%0 = load double, double* %arrayidx, align 8
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; CHECK: ld {{[0-9]+}}, .LC{{[0-9]+}}@toc(2)
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%cmp = fcmp oeq double %0, %a
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%conv = zext i1 %cmp to i32
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ret i32 %conv
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}
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; Check the creation of 4 .tc entries:
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; * int64_t global 'number64'
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; * double constant 2.0
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; * double array 'double_array'
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; * static int64_t 'x' accessed within '@internal_static_var'
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; CHECK: .LC{{[0-9]+}}:
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; CHECK-NEXT: .tc {{[\._a-zA-Z0-9]+}}[TC],{{[\._a-zA-Z0-9]+}}
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; CHECK-NEXT: .LC{{[0-9]+}}:
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; CHECK-NEXT: .tc {{[\._a-zA-Z0-9]+}}[TC],{{[\._a-zA-Z0-9]+}}
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; CHECK-NEXT: .LC{{[0-9]+}}:
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; CHECK-NEXT: .tc {{[\._a-zA-Z0-9]+}}[TC],{{[\._a-zA-Z0-9]+}}
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; CHECK-NEXT: .LC{{[0-9]+}}:
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; CHECK-NEXT: .tc {{[\._a-zA-Z0-9]+}}[TC],{{[\._a-zA-Z0-9]+}}
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