musleabi* targets: we no longer need to set gnueabi* for LLVM now that we set the float ABI explicitly

Author: RalfJung

compiler/rustc_target/src/spec/targets/arm_unknown_linux_musleabi.rs

@@ -2,10 +2,7 @@ use crate::spec::{FloatAbi, Target, TargetOptions, base};
 
 pub(crate) fn target() -> Target {
     Target {
-        // It's important we use "gnueabi" and not "musleabi" here. LLVM uses it
-        // to determine the calling convention and float ABI, and it doesn't
-        // support the "musleabi" value.
-        llvm_target: "arm-unknown-linux-gnueabi".into(),
+        llvm_target: "arm-unknown-linux-musleabi".into(),
         metadata: crate::spec::TargetMetadata {
             description: Some("Armv6 Linux with musl 1.2.3".into()),
             tier: Some(2),

compiler/rustc_target/src/spec/targets/arm_unknown_linux_musleabihf.rs

@@ -2,10 +2,7 @@ use crate::spec::{FloatAbi, Target, TargetOptions, base};
 
 pub(crate) fn target() -> Target {
     Target {
-        // It's important we use "gnueabihf" and not "musleabihf" here. LLVM
-        // uses it to determine the calling convention and float ABI, and it
-        // doesn't support the "musleabihf" value.
-        llvm_target: "arm-unknown-linux-gnueabihf".into(),
+        llvm_target: "arm-unknown-linux-musleabihf".into(),
         metadata: crate::spec::TargetMetadata {
             description: Some("Armv6 Linux with musl 1.2.3, hardfloat".into()),
             tier: Some(2),

compiler/rustc_target/src/spec/targets/armv5te_unknown_linux_musleabi.rs

@@ -2,11 +2,7 @@ use crate::spec::{FloatAbi, Target, TargetOptions, base};
 
 pub(crate) fn target() -> Target {
     Target {
-        // FIXME: this comment below does not seem applicable?
-        // It's important we use "gnueabihf" and not "musleabihf" here. LLVM
-        // uses it to determine the calling convention and float ABI, and LLVM
-        // doesn't support the "musleabihf" value.
-        llvm_target: "armv5te-unknown-linux-gnueabi".into(),
+        llvm_target: "armv5te-unknown-linux-musleabi".into(),
         metadata: crate::spec::TargetMetadata {
             description: Some("Armv5TE Linux with musl 1.2.3".into()),
             tier: Some(2),

compiler/rustc_target/src/spec/targets/armv7_unknown_linux_musleabihf.rs

@@ -4,10 +4,7 @@ use crate::spec::{FloatAbi, Target, TargetOptions, base};
 
 pub(crate) fn target() -> Target {
     Target {
-        // It's important we use "gnueabihf" and not "musleabihf" here. LLVM
-        // uses it to determine the calling convention and float ABI, and LLVM
-        // doesn't support the "musleabihf" value.
-        llvm_target: "armv7-unknown-linux-gnueabihf".into(),
+        llvm_target: "armv7-unknown-linux-musleabihf".into(),
         metadata: crate::spec::TargetMetadata {
             description: Some("Armv7-A Linux with musl 1.2.3, hardfloat".into()),
             tier: Some(2),

compiler/rustc_target/src/spec/targets/thumbv7neon_unknown_linux_musleabihf.rs

@@ -8,10 +8,7 @@ use crate::spec::{FloatAbi, Target, TargetOptions, base};
 
 pub(crate) fn target() -> Target {
     Target {
-        // It's important we use "gnueabihf" and not "musleabihf" here. LLVM
-        // uses it to determine the calling convention and float ABI, and LLVM
-        // doesn't support the "musleabihf" value.
-        llvm_target: "armv7-unknown-linux-gnueabihf".into(),
+        llvm_target: "armv7-unknown-linux-musleabihf".into(),
         metadata: crate::spec::TargetMetadata {
             description: Some("Thumb2-mode ARMv7-A Linux with NEON, musl 1.2.3".into()),
             tier: Some(3),